1973. Publisher: Houghton Mifflin; 1st edition (January 1, 1973). ISBN 978-0395166109 Ralph O'Neill in México. Santiago A. Flores (Article in Spanish). American...
Hood, Joseph (1973). A Dream Of Eagles. Houghton Mifflin Company. ISBN 978-0395166109. "Sikorsky S-38, the 314 Series". Skyways (49): 44. January 1999. https://www...
Boston: San Francisco Book Company/Houghton Mifflin Company. ISBN 9780395166109. Lodeneesen, Marius (1984). Captain Lodi Speaking. Boston ASIN: B0006EGX1U:...
Hood, Joseph (1973). A Dream Of Eagles. Houghton Mifflin Company. ISBN 978-0395166109. Homan & Reilly 2000, p. 38. "The Brownsville Base". Pan Am Historical...