World War II Patriotic cover
"Bonds Buy Bombs"
A bomb is exploding under a caricature of a Japanese officer in this cachet published by W. R. Threlkel and W. R. Tharp of Louisville, Kentucky. A six-cent United States Scott C25 (air mail postage) is affixed to this serviceman's cover postmarked Camp Beale, California, March 15, 1944.