The Lockheed Constellation (populary known as "Connie") was a four-engine triple tail airliner built by Lockheed Corporation.
Development of the Constellation on 9th June 1939, when Howard Hughes, Majority stockholder of TWA, visited Lockheed and personally presented the company with a requirement for a super-luxury transport, capable of flying non-stop coast to coast across the continental USA.[N 1] by the end of 1939, TWA submitted an order for nine Model 049s - known to Lockheed as the L-49 - which was later increased to 40, and soon followed by an order for a similar number from Pan Am.
- World Aircraft Information Files Aviation Partwork. Midsummer Books Ltd. File 515 Sheet 1 (World Civil Aircraft:Lockheed Constellation - Introduction)
- WAIF File 515 Sheet 2 (World Civil Aircraft:Lockheed Constellation - C-69/L-049 Constellation)