The Rhine Bridge at Bonn. 
Object type: Stereograph
Department: Photographs
Artist: Unknown
Artist role: Artist
Date: 1860s–80s
Medium: Photomechanical print
Dimensions: Approx. 3 1/2 × 7 in. (8.9 × 17.8 cm)
Classification: Photographs
Credit line: The Jefferson R. Burdick Collection, Gift of Jefferson R. Burdick
Accession year: 1963