[Committee hearings] serial, 90th Congress. 17. Passenger train service, hearings before Subcommittee on Surface Transportation, 90th Congress, 1st session, on S. 1175, S. 512, S. 1685, S. Con. Res. 25, and S.J. Res. 52: pt. 2, July 31-Aug. 25, 1967.