• Photo, Print, Drawing
    View of Pittsburgh & Allegheny Bird's-eye view of Pittsburgh, Pennsylvania at the confluence of the Monongahela and Allegheny Rivers; Birmingham, Pennsylvania is in the right foreground and Allegheny is in the distance on the left.
    • Contributor: Krebs, Otto
    • Date: 1874
  • Photo, Print, Drawing
    Pittsburgh, Allegheny & Birmingham Bird's-eye view of Pittsburgh at the confluence of the Monongahela, in the foreground, and the Allegheny Rivers; Birmingham is in the right foreground and Allegheny is in the distance on the left.
    • Contributor: Krebs, Otto
    • Date: 1871
  • Photo, Print, Drawing
    Oswego, N.Y. Bird's-eye view of Oswego, New York, showing the mouth of the Oswego River at Lake Ontario.
    • Contributor: Moody, David William - Bradley, Lewis - Smith Bros. & Co.
    • Date: 1855
  • Photo, Print, Drawing
    Bethlehem and South Bethlehem, Pa. Looking north east Bird's-eye view of Bethlehem and South Bethlehem, Pennsylvania, looking northeast along the Lehigh River.
    • Contributor: Rudd, G. A.
    • Date: 1877