Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Rensselaer Iron Works, Rail Mill, Adams Street & Hudson River, Troy, R...
Significance: A typical example of masonry and heavy timber factory construction; part of an important nineteenth-century iron works. Unprocessed Field note material exists for this structure: FN-4 Survey num... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...
Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Whipple Cast & Wrought Iron Bowstring Truss Bridge, Normans Kill Vicin...
Bridge moved to present location ca. 1900. More information is available by reviewing U.S. patent no. 2064. Significance: One of only two known surviving "Whipple" bowstring truss bridges, and one of the few re... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Silver King Mining Company, Mineshaft & Main Hoist, Woodside Gulch, Pa...
Significance: The Silver King Mining Company became one of the major producers in the Park City district of Utah and attained a brief reputation as the richest silver mine in the known world. One of the smalle... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA
Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More
Watervliet Arsenal, Cast-Iron Storehouse, Westervelt Avenue & Gibson S...
Significance: May well be the only remaining all-iron building still used for its original purpose. It is also an early example of prefabricated construction, all its parts having been constructed by Architect... More