Report of the Special Committee on Free Bridges, giving a review of the work of the committee towards securing the freeing of the bridges across the Allegehny River
A 1911 committee report issued by the Chamber of Commerce of Pittsburgh, arguing for the removal of tolls on the Allegheny River bridges for city officials and business members. Halftone photographs show steel truss and suspension spans from deck level and riverbank, with mills, smoke, barges and lattice girders; useful for industrial skylines, bridge geometry and gritty tonal textures.
