Certificates for U. S. Alaska air carriers. Hearing before a subcommittee ... Eighty fifth Congress, first session, on H.R. 4520 and H.R. 5926, bills to amend section 401 (E) of the Civiil Aeronautics Act of 1938 in order to authorize permanent certification for certain air carriers operating between the United States and Alaska. May 3, 1957.

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