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You searched for: Medium cyanotype Remove constraint Medium: cyanotype Topical Subjects Railroads--Bridges and Tunnels. Remove constraint Topical Subjects: Railroads--Bridges and Tunnels.
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Unidentified workers stand among cut stones used in the construction of bridge abutments (such as one in the background). The poles in the photograph are part of the pulley used to place the stones.
Two unidentified men stand on new bridge abutment during the construction of the Ohio extension of the Norfolk & Western Railroad.