Photograph of a U.S. Department of Commerce Avro 594 Avian IV aircraft (tail number NC672E) parked by a hangar, circa 1920s. "U.S. Department of Commerce / Med Examiner" is written on the fuselage.
Composite photograph of a Lear Developments radio receiver, showing views of the internal components and the external case, circa 1931-1939. The caption notes that this device was developed for the U.S. Department of Commerce.Typed caption on verso:…