IdentifierBIO_image_004SourceBiographical Files, William E. Boeing Sr. FolderDescriptionPhotograph of Bertha Boeing christening a Boeing Model 40A aircraft, Crissy Field, California, July 1, 1927. The christening commemorates the inaugural flight of Boeing Air Transport and the opening of its first air mail route, between San Francisco and Chicago. The people standing behind Bertha are (from left to right) W. G. Herron, William E. Boeing Sr., and Tom Powers.
[Bertha Boeing christening Boeing Model 40A aircraft], [BIO_image_004]. Museum of Flight Digital Collections, accessed 06/12/2025, https://digitalcollections.museumofflight.org/nodes/view/26084
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