Provide permanent certificates for local service air carriers : hearings ... Eighty-third Congress, second session on S. 3759 and H.R. 8898, bills to provide permanent certificates for local service air carriers and Amendments "I" and "J" to S. 2647, amendments to provide permanent certificates for local service air carriers. April 6, 27, May 27, June 1, and July 27, 1954. (U.S. Govt. Print. Off,, 1954)