The Alleghany and Monogahela Rivers Join at Pittsburgh, Penna.
Transparency
Keystone View Company
American, 1892–1963
The Alleghany and Monogahela Rivers Join at Pittsburgh, Penna.
From "Primary Set"
transparency, gelatin on glass
Overall: 3 1/4 × 4 in. (8.3 × 10.2 cm)
Gift of the 3M Foundation, ex-collection Louis Walton Sipley
