MACK, Harry Francis, (American, 1907-): 3 Aviation WPA FAP Etchings, ''Strange Bird'', 15 3/4'' x 11 1/2'', pencil signed/titled, stamped; ''Wind Tunnel'', 15 3/4'' x 11 1/2'', pencil signed/titled, stamped, with original FAP label, ''Home Port'', 11 1/2'' x 16'', pencil signed/titled, stamped. All unframed, with scattered foxing throughout.