Hill-to-Hill Bridge Illustrated 

Rollin Ruben Keim published two souvenir historical & pictorial pamphlets with support from the Bethlehem Chamber of Commerce. These pamphlets include construction and building facts for the Hill-to-Hill Bridge as well as a history of the other bridges in Bethlehem.

Rollin Ruben Keim (1897-1969)

Hill-to-Hill Bridge Illustrated