Committee hearings serials, 81st Congress. 4. Amend Reclamation project act of 1939, hearings before subcommittee on irrigation and reclamation, 81st Congress, 1st session, on H. R. 830, H. R. 1762, H. R. 1770, H. R. 1999, H. R. 2000, Mar. 2-8, 1949.