Aerial view north from Mt. Washington; Allegheny and Monongahela Rivers flanking downtow
Bird's-eye view of Washington, D.C. from above the Potomac River, looking north; prominent features ...
<p>Pittsburgh in Allegheny County is highlighted in the West and Philadelphia is highlighted in the ...
Aerial view of city and surrounding countryside from southwest; river Lethe in foregroun
Bird's-eye view of Pittsburgh, Pennsylvania at the confluence of the Monongahela and Allegheny River...
High aerial view north, with Potomac River, Washington Channel, and Anacostia River (L-R
Pittsburgh (542) with terrain data, x 3 exaggeration. These scenes show Pittsburgh and the countrys...
Ohio River, Brunot Island and Manchester Bridge [West End Bridge], northwestward from Duquesne Heigh...
A view of the Monongahela, Allegheny and Ohio Rivers from Mt. Washington, Pittsburgh, Pennsylvania, ...
A view of the Monongahela, Allegheny and Ohio Rivers converging around The Point taken from Mount Wa...
Stereograph showing a bird's-eye view of the Allegheny River with Oil City, Pennsylvania, in the dis...
aerial view, looking over the Schuylkill River towards Penn Park and downtown Philadelphia, 11/8/200
Downtown and Monongahela River from Pittsburgh & Lake Erie Railroad Station, Pittsburgh, Pennsylvani...
Aerial view of a river and the neighborhood that lines it.https://corescholar.libraries.wright.edu/s...
Three black and white photographs taken in 1940 by William Green from 39th floor of Pittsburgh's Gul...
Landscape drawing shows a hill, Mount Washington from Easton, Pennsylvania on the far side of the Le...
Bird's-eye view of Washington, D.C. from above the Potomac River, looking north; prominent features ...
<p>Pittsburgh in Allegheny County is highlighted in the West and Philadelphia is highlighted in the ...
Aerial view of city and surrounding countryside from southwest; river Lethe in foregroun
Bird's-eye view of Pittsburgh, Pennsylvania at the confluence of the Monongahela and Allegheny River...
High aerial view north, with Potomac River, Washington Channel, and Anacostia River (L-R
Pittsburgh (542) with terrain data, x 3 exaggeration. These scenes show Pittsburgh and the countrys...
Ohio River, Brunot Island and Manchester Bridge [West End Bridge], northwestward from Duquesne Heigh...
A view of the Monongahela, Allegheny and Ohio Rivers from Mt. Washington, Pittsburgh, Pennsylvania, ...
A view of the Monongahela, Allegheny and Ohio Rivers converging around The Point taken from Mount Wa...
Stereograph showing a bird's-eye view of the Allegheny River with Oil City, Pennsylvania, in the dis...
aerial view, looking over the Schuylkill River towards Penn Park and downtown Philadelphia, 11/8/200
Downtown and Monongahela River from Pittsburgh & Lake Erie Railroad Station, Pittsburgh, Pennsylvani...
Aerial view of a river and the neighborhood that lines it.https://corescholar.libraries.wright.edu/s...
Three black and white photographs taken in 1940 by William Green from 39th floor of Pittsburgh's Gul...
Landscape drawing shows a hill, Mount Washington from Easton, Pennsylvania on the far side of the Le...
Bird's-eye view of Washington, D.C. from above the Potomac River, looking north; prominent features ...
<p>Pittsburgh in Allegheny County is highlighted in the West and Philadelphia is highlighted in the ...
Aerial view of city and surrounding countryside from southwest; river Lethe in foregroun