Kaukauna Lock & Dam, Lock Shelter at Lock 4, On Northern Embankment, n...
Significance: The lock shelter provides shelter for the lockkeeper while on active duty. In addition, the lock shelter provides office space and first aid facilities for office personnel. As such the lock shelt... More
DePere Lock & Dam, Garage, Approximately 35 feet Southeast of Lock She...
Significance: The garage served as part of the lockkeeper's residential complex. Survey number: HAER WI-86-C Building/structure dates: 1976 Initial Construction
Little Kaukauna Lock & Dam, Storage Building, Approximately 100 feet s...
Significance: The storage shed functions as part of the daily operation of the Little Kaukauna Lock and Dam Complex. Survey number: HAER WI-89-D Building/structure dates: 1983 Initial Construction National R... More
Little Kaukauna Lock & Dam, Garage, At end of Mill Road, northeast of ...
Significance: The garage served as part of the lookkeeper's residence complex. Survey number: HAER WI-89-C Building/structure dates: 1978 Initial Construction National Register of Historic Places NRIS Number... More
Menasha Lock & Dam, Storage Building, Approximately 130 feet east of M...
Significance: The storage building functions as part of the daily operation of the Menasha Lock and Dam Complex. Survey number: HAER WI-90-D Building/structure dates: ca. 1970 Initial Construction National R... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 21, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Crater Lake National Park Roads, Klamath Falls, Klamath County, OR
Significance: The primary roads in Crater Lake National Park were designed and constructed to provide visitor access to the park's scenic features, which are largely concentrated along the rim of Crater Lake. ... More
Crater Lake National Park Roads, Klamath Falls, Klamath County, OR
Significance: The primary roads in Crater Lake National Park were designed and constructed to provide visitor access to the park's scenic features, which are largely concentrated along the rim of Crater Lake. ... More
Chickamauga National Military Park Tour Roads, Fort Oglethorpe, Catoos...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Chickamauga National Military Park Tour Roads, Fort Oglethorpe, Catoos...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Chickamauga National Military Park Tour Roads, Fort Oglethorpe, Catoos...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Chickamauga National Military Park Tour Roads, Fort Oglethorpe, Catoos...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
MacDill Air Force Base, Signal & Ordnance Warehouse, 7620 Hanger Loop ...
Significance: The Signal and Ordnance Warehouse, due to its architectural integrity and its contribution to the Second World War-era infrastructure, forms an integral part of MacDill Air Force Base's historic c... More
MacDill Air Force Base, Signal & Ordnance Warehouse, 7620 Hanger Loop ...
Significance: The Signal and Ordnance Warehouse, due to its architectural integrity and its contribution to the Second World War-era infrastructure, forms an integral part of MacDill Air Force Base's historic c... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 15, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 15, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Obsidian Creek Bridge, Spanning Obsidian Creek at Indian Creek Campgro...
Significance: Obsidian Creek Bridge is one of two remaining Army Corps of Engineers bridges in Yellowstone National Park. It represents the significant role that the Corps of Engineers played in the early year... More
Marie Zimmermann Farm, U.S. Route 209, 5 Miles Southwest of Milford. T...
Significance: The cultural landscape of The Farm is significant as the embodiment of a mutually influential relationship between the property and the important 20th century U.S. Arts and Crafts artist Marie Zim... More
MacDill Air Force Base, Water Pumping Plant No. 1, 2834 Sea Swallow Av...
Significance: The Water Pump Plant, due to its architectural integrity and contribution to the Second World War-era infrastructure, forms an integral part of MacDill Air Force Base's historic character. The st... More
MacDill Air Force Base, Water Pumping Plant No. 1, 2834 Sea Swallow Av...
Significance: The Water Pump Plant, due to its architectural integrity and contribution to the Second World War-era infrastructure, forms an integral part of MacDill Air Force Base's historic character. The st... More
MacDill Air Force Base, Mess Hall, 2106 Florida Keys Avenue, Tampa, Hi...
Significance: The Mess Hall, due to its architectural integrity and its contribution to the Second World War-era infrastructure, is an integral part of MacDill Air Force Base's historic character. The building... More
Jet Propulsion Laboratory Edwards Facility, Edwards Air Force Base, Bo...
Significance: Operated by the California Institute of Technology, the Jet Propulsion Laboratory Edward Facility was the United States' first university-sponsored research and testing facility for the developmen... More
Jet Propulsion Laboratory Edwards Facility, Edwards Air Force Base, Bo...
Significance: Operated by the California Institute of Technology, the Jet Propulsion Laboratory Edward Facility was the United States' first university-sponsored research and testing facility for the developmen... More
MacDill Air Force Base, Field Officers' Quarters, 2112 Staff Circle, T...
See HABS FL-384-AM for measured drawings. Significance: The officers' quarters, due to their architectural integrity and their contribution to the Second World War-era infrastructure, are an integral part of Ma... More
Arlington National Cemetery, USS Maine Memorial, Arlington, Arlington ...
Significance: "Remember the Maine" was the popular call of the "yellow" or sensational press, Congress, and private citizens throughout the United States as they rallied around the tragedy of 1898. The sinking ... More
Arlington National Cemetery, USS Maine Memorial, Arlington, Arlington ...
Significance: "Remember the Maine" was the popular call of the "yellow" or sensational press, Congress, and private citizens throughout the United States as they rallied around the tragedy of 1898. The sinking ... More
DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arka...
Significance: The American practice of using pins for bridge connections lasted from the 1860s until the 1920s. DeGray Creek Bridge is the only known surviving pin-connected Pratt pony truss bridge in Arkansas... More
DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arka...
Significance: The American practice of using pins for bridge connections lasted from the 1860s until the 1920s. DeGray Creek Bridge is the only known surviving pin-connected Pratt pony truss bridge in Arkansas... More
Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Gre...
Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; and HAER PA-304, Lower Monongahela River Public Impr... More
Little Kaukauna Lock & Dam, At 23-mile marker on Lower Fox River, Rock...
Significance: The Little Kaukauna Lock and Dam Complex allows passage for watercraft around the rapids present in the Lower Fox River at Little Kaukauna. Survey number: HAER WI-89 Building/structure dates: 18... More
Cedars Lock & Dam, Lockkeeper's Residence, Approximately 50 feet North...
Significance: The Lockkeeper's house served as an on-site headquarters for the lockkeeper responsible for operating the locks. In addition, the house served as a residence for the lockkeeper's family. The res... More
Firehole River Bridge, Spanning Firehole River at Fountain Freight Roa...
Significance: This bridge is one of two remaining Army Corps of Engineers bridges in Yellowstone National Park. It represents the significant role that the Corps of Engineers played in the early years of road ... More
Firehole River Bridge, Spanning Firehole River at Fountain Freight Roa...
Significance: This bridge is one of two remaining Army Corps of Engineers bridges in Yellowstone National Park. It represents the significant role that the Corps of Engineers played in the early years of road ... More
Firehole River Bridge, Spanning Firehole River at Fountain Freight Roa...
Significance: This bridge is one of two remaining Army Corps of Engineers bridges in Yellowstone National Park. It represents the significant role that the Corps of Engineers played in the early years of road ... More
MacDill Air Force Base, Supply & Equipment Warehouse, 8005 Hillsboroug...
Significance: The Base Supply & Equipment Warehouse, due to its architectural integrity and its contribution to the Second World War-era infrastructure, is an integral part of MacDill Air Force Base's historic ... More
Cape Canaveral Air Station, Launch Complex 17, Facility 28413, East en...
Survey number: HAER FL-8-5-I Building/structure dates: 1956 Initial Construction National Register of Historic Places NRIS Number: 84003872
Hughes Aircraft Company, 6775 Centinela Avenue, Los Angeles, Los Angel...
Significance: Primarily developed between 1941 and 1953 and in continuous use to the present, the subject structures of the Hughes Aircraft Company, Culver City plant, constitute a unique and remarkably intact ... More
Kanawha River Lock & Dam No. 11, Lockmaster's House, West side, U.S. R...
Significance: This masonry house, built by the U.S. Army Corps of Engineers ca. 1900, was constructed as a residence for the master of Kanawha River Lock and Dam No. 11. Survey number: HABS WV-287-B Building/... More
MacDill Air Force Base, Double Non-Commissioned Officers' Quarters, 74...
Significance: The Non-Commissioned Officers Quarters, due to their architectural integrity and their contribution to the Second World War-era infrastructure, are an integral part of MacDill Air Force Base's his... More
Kaukauna Lock & Dam, Lock Shelter at Lock 2, On Northern Embankment, N...
Significance: The lock shelter provides shelter for the lockkeeper while on active duty. In addition, the lock shelter provides office space and first aid facilities for office personnel. As such the lock shelt... More
Cape Canaveral Air Station, Launch Complex 17, Facility 28503, East en...
Survey number: HAER FL-8-5-Q Building/structure dates: 1956 Initial Construction National Register of Historic Places NRIS Number: 84003872
Ohio Slack Water Dams, Lock & Dam No. 4, East bank of Ohio River at mi...
Significance: Ohio Slack Water Dams, Lock and Dam No. 4, HAER No. PA-227-A was part of the fifty-two slackwater locks and dams constructed by the U.S. Army Corps of Engineers on the Ohio River, between 1877-191... More
Cape Canaveral Air Station, Launch Complex 17, Facility 28422, East en...
Survey number: HAER FL-8-5-M Building/structure dates: 1956 Initial Construction National Register of Historic Places NRIS Number: 84003872
St. Mary's Falls Canal, Soo Locks, St. Mary's River at Falls, Sault St...
Significance: The locks of the St. Mary's Falls Canal reflect a national level of significance in settlement, transportation, industrial, and engineering history. The completion of the State Locks in 1855 effe... More
Dalecarlia Water Treatment Plant, 5900 MacArthur Boulevard, Northwest,...
Significance: The Dalecarlia Water Treatment Plant is a component of the Washington Aqueduct, a utility operated by the U.S. Army Corps of Engineers that provides water to Washington, D.C., Arlington County, Vi... More
Hill Field, Aircraft Operations Hangar, 5970 Southgate Avenue, Layton,...
Significance: The primary mission of the Hill Field during and after World War II was to repair, maintain, and store aircraft, and also to receive, store and supply air materiel. Building 1, the Aircraft Opera... More
Ellsworth Air Force Base, Mess Hall & Administration Building, 1301 El...
Significance: The Mess Hall and Administration Building (Building No. 1211) is one of at least four men's mess halls constructed at the base during the early 1950s; all are of a similar configuration, and are p... More
Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
5904 Dalecarlia Place (House), Washington, District of Columbia, DC
This house is considered standardized Army housing plan "Type B." Significance: The dwelling at 5906 Dalecarlia Place is a contributing resource to the Calecarlia Water Treatment Plane, a component facility of ... More
MacDill Air Force Base, Supply & Equipment Warehouse, 7409 Hanger Loop...
Significance: This Supply and Equipment Warehouse, due to its architectural integrity and its contribution to the Second World War and Korean War-era infrastructure, is an integral part of MacDill Air Force Bas... More
Parsons Nursery, Wash House, South side of U.S. Route 219, Parsons, Tu...
Significance: The wash house, built in 1939, was the only nursery building constructed by the members of Camp Parsons Civilian Conservation Corps Camp, according to John King. This building provided larger loc... More
Parsons Nursery, Wash House, South side of U.S. Route 219, Parsons, Tu...
Significance: The wash house, built in 1939, was the only nursery building constructed by the members of Camp Parsons Civilian Conservation Corps Camp, according to John King. This building provided larger loc... More
Cape Canaveral Air Station, Launch Complex 17, Facility 36006, East en...
Survey number: HAER FL-8-5-U Building/structure dates: 1956 Initial Construction National Register of Historic Places NRIS Number: 84003872
Cape Canaveral Air Station, Launch Complex 17, Facility 36006, East en...
Survey number: HAER FL-8-5-U Building/structure dates: 1956 Initial Construction National Register of Historic Places NRIS Number: 84003872
Chicago Sanitary and Ship Canal, Lockport Controlling Works, Illinois ...
Significance: The Lockport Controlling Works, originally consisting of a bear-trap dam and sluice gates, allowing the Sanitary District to discharge water from the Chicago Sanitary and Ship Canal into the Des P... More
First Methodist Episcopal Church, East side of Fourth Avenue, Niobrara...
Significance: The Methodist Episcopal Church was built circa 1880 in the original waterfront town of Niobrara. In 1881-82, the church, along with many other structures, was moved to a "new" townsite after the ... More
Appleton Locks & Dams, Fox River at Oneida Street, Appleton, Outagamie...
Significance: The Appleton Locks and Dams Complex allows passage for watercraft around 1 1/2 miles of rapids as well as a 4 foot falls present in the Lower Fox River at Appleton. Survey number: HAER WI-84 Bui... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 26R, Alton,...
Significance: ...Lock and Dam NO. 26R constitute the first replacements of an original element of the Nine-Foot Channel Project. The new installation will replace Lock and Dam No. 26, located two miles upstrea... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 26R, Alton,...
Significance: ...Lock and Dam NO. 26R constitute the first replacements of an original element of the Nine-Foot Channel Project. The new installation will replace Lock and Dam No. 26, located two miles upstrea... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36,...
Significance: The Mark Twain Memorial Bridge is significant as one of the state's most monumental examples of cantilevered steel truss construction. Also, it has served as a pivotal link for regional transport... More
Isa Lake Bridge, Spanning Isa Lake at Grand Loop Road, Lake, Teton Cou...
Significance: Isa Lake Bridge typifies the early design philosophy of the National Park Service, which was to use indigenous materials to harmonize man-made features with their natural surroundings. This philo... More
Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie Co...
Significance: The Kaukauna Locks and Dam Complex provides passage around drop in elevation of 50 feet in the Lower Fox River at Kaukauna. The complex served as an integral part of the Lower Fox River Waterway ... More
Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie Co...
Significance: The Kaukauna Locks and Dam Complex provides passage around drop in elevation of 50 feet in the Lower Fox River at Kaukauna. The complex served as an integral part of the Lower Fox River Waterway ... More
Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie Co...
Significance: The Kaukauna Locks and Dam Complex provides passage around drop in elevation of 50 feet in the Lower Fox River at Kaukauna. The complex served as an integral part of the Lower Fox River Waterway ... More
Hassler Bridge, Spanning Obey River at State Route 42, Byrdstown, Pick...
Significance: The bridge is a late example of metal truss design, which was a standard of the Tennessee Highway Department since 1920. The bridge is also a tangible artifact of the lifestyle and economic change... More
Hassler Bridge, Spanning Obey River at State Route 42, Byrdstown, Pick...
Significance: The bridge is a late example of metal truss design, which was a standard of the Tennessee Highway Department since 1920. The bridge is also a tangible artifact of the lifestyle and economic change... More
Ellsworth Air Force Base, Readiness Building, 810 Kenny Road, Blackhaw...
This structure was demolished in 1996. Significance: The Ellsworth Air Force Base Dormitory is significant for its association with American military policy during the Cold War years of the early 1950s. During ... More
Ellsworth Air Force Base, Readiness Building, 810 Kenny Road, Blackhaw...
This structure was demolished in 1996. Significance: The Ellsworth Air Force Base Dormitory is significant for its association with American military policy during the Cold War years of the early 1950s. During ... More
Ellsworth Air Force Base, Readiness Building, 810 Kenny Road, Blackhaw...
This structure was demolished in 1996. Significance: The Ellsworth Air Force Base Dormitory is significant for its association with American military policy during the Cold War years of the early 1950s. During ... More
Lock Keeper's House, Seventeenth Street & Constitution Avenue, Northwe...
1994 Charles E. Peterson Prize, Entry Significance: The lockkeeper's house at 17th Street and Constitution Avenue served the lock that connected the Washington branch of the Chesapeake and Ohio Canal to the Was... More
Lock Keeper's House, Seventeenth Street & Constitution Avenue, Northwe...
1994 Charles E. Peterson Prize, Entry Significance: The lockkeeper's house at 17th Street and Constitution Avenue served the lock that connected the Washington branch of the Chesapeake and Ohio Canal to the Was... More
Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA
Significance: This handsome masonry building, minus its 1946 frame addition, is highly typical of canal-related mils in the region. Although it clearly reflects its proximity to the Union Canal, it occupied th... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mount Gleason Nike Missile Site, Angeles National Forest, South of Sol...
Significance: The Mt. Gleason facility is significant for several reasons. It was the first Nike unit planned and constructed in the Angeles National Forest, and it operated for the longest period of time amon... More