• 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