found: Its 25 années de trafic ... 1946.
found: Schlittler, G.M. Innovationsbezogene Personalentwicklung, 1992:t.p. (Swissair AG; Nationale Luftverkehrsgesellschaft der Schweiz)
found: Sturmflug, 2004:p. 128, etc. (merged with Crossair [no publs. in LC] to become SWISS)
found: Information from 678 converted Dec. 17, 2014(Founded 1931)
found: Wikipedia, viewed 13 July 2017:under Crossair (Crossair Ltd. Co. for Regional European Air Transport (German: Crossair AG für europäischen Regionalluftverkehr) was a regional airline headquartered on the grounds of EuroAirport Basel-Mulhouse-Freiburg in Saint-Louis, Haut-Rhin, France, near Basel, Switzerland. It became Swiss International Air Lines after taking over most of the assets of Swissair following that airline's bankruptcy in 2002; founded 18 November 1978, ceased operations 31 March 2002)