District of Columbia airport. Hearings before a subcommittee of the committee on Interstate and Foreign Commerce, House of Representatives, Eighty first Congress, second session, on H. R. 7241, a bill to authorize the construction, protection, operation, and maintenance of a public airport in or in the vicinity of the District of Columbia, S. 456, an act to authorize the construction, porotection, operation, and maintenance of a public airport in or in the vicinity of the District of Columbia. May 18, 19, June 30, and July 7, 1950.

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