Trade-marks: Hearings Before the Subcommittee on Trade-marks, Committee on Patents, House of Representatives, Seventy-seventh Congress, First Session, on H.R. 102, H.R. 5461, and S. 895, Bills to Provide for the Registration and Protection of Trade-marks Used in Commerce, to Carry Out the Provisions of Certain International Conventions, and for Other Purposes, November 4, 12, 13, and 14, 1941