The prototype Cardinal, N422, s/n 101, in a photo possibly taken
in November/December 1929. (SLAC photo from the
Gerald Balzer collection, AAHS_D107445)
The prototype Cardinal, N422, s/n 101, in a photo possibly taken
in November/December 1929. (SLAC photo from the
Gerald Balzer collection, AAHS_D107445)