57 Jonathan gill Images: LOC's Public Domain Archive Public Domain Search

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

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

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

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

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

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

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

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

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

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

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

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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... 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

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

christopher h marston

dean herrin

eric n delony

frances c robb

historic american engineering record

jet lowe

library of congress

monongahela

pennsylvania

jonathan gill