camerawiki:
Advertisement for the Foth Derby and Foth-Flex (Jan.–Feb. 1936)
camerawiki:
Advertisement for the Foth Derby and Foth-Flex (Apr. 1936)
camerawiki:
Advertisement for the Foth Derby (Jul.–Aug. 1936)
camerawiki:
Advertisement for the Foth Derby and Foth-Flex (Sep. 1936)
camerawiki:
Column on the Foth Derby (late 1937)
camerawiki:
Foth Derby, interchangeable Tessar lens