Title: Viaduct across Rock Creek, District of Columbia. Letter from the Commissioners of the District of Columbia, transmitting, in pursuance of the clause in the District Appropriation Act of March 3, 1897, a report together with the submitted plans and their accompanying letters of transmittal, descriptions, specifications, and estimates for a bridge or viaduct across Rock Creek on the line of the extension of Connecticut Avenue
Subjects: Specifications, Bridges