[Committee hearings, serial], 88th Congress. 13. Various river and harbor bills and St. Lawrence Seaway deicing, hearings before Subcommittee on Rivers and Harbors, 88th Congress, 1st session, on H.R. 5244, S. 453, H.R. 6001, H.R. 7769, S. 530 and H.R. 2123, Sept. 17 and 19, 1963.