00722cam a2200229 4500 521109090 TxAuBib 20210101120000.0 831107s1981||||||||||||||||||||||||eng|u 79053334 9780525931348 $20.95 0525931341 $20.95 DLC DLC DLC TxAuBib Halpern, John, 1918- Early birds : an informal account of the beginnings of aviation / John Halpern. 1st ed. New York : Dutton, 1981. 89 p. : col. ill. ; 29 cm. Bibliography: p. 89. 20210101. Aeronautics History.