1. Ventilation of Senate chamber and hall of House of Representatives Author(s): United States. Congress. Joint Committee on Ventilation. Publication: [Washington, D.C. : G.P.O., 1871] Subject(s): VentilationDistrict of ColumbiaUnited States Capitol (Washington, D.C.)
2. Senate chamber and hall of the House of Representatives Author(s): United States. Congress. Joint Committee on Ventilation. Publication: [Washington, D.C. : G.P.O., 1871] Subject(s): VentilationDistrict of ColumbiaUnited States Capitol (Washington, D.C.)
