The metric system. Hearings before the Committee on coinage, weights and measures on H. R. 93 (58th Congress, 1st session); H. R. 2054 (58th Congress, 2d session), and H. R. 8988 (59th Congress, 1st session)
United States. Congress. House. Committee on Coinage, Weights, and Measures; United States. 58th Congress, 2d session, 1903-1904. House. [from old catalog]; United States. 59th Congress, 1st session, 1905-1906. House. [from old catalog]