Leif Erikson Day : hearings ... Eighty-eighth Congress, second session, on H.J. Res. 393, H.J. Res. 468, H.J. Res. 473, H.J. Res. 476, H.J. Res. 492, H.J. Res. 519, H.J. Res. 524, H.J. Res. 538, H.J. Res. 554, H.J. Res. 795. H.J. Res. 895. March 4, 1964. (U.S. Govt. Print. Off,, 1964)