Belzer (2008-11-19). Storia delle Compagnie Aeree Italiane(in it). ilvolo. Retrieved on 2011-08-31. No name, no license, a click on the image shows this thumb from Commons directly
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Please specify if terms of license are complied with! História da Aviação nos Açores(in pt). Ultimas Curiosidades (2010-09-29). Retrieved on 2011-09-05. No name, no license, a click on the image shows this thumb