Commemorative envelope, "Don't Relax - Keep Building"

commemorative envelope

Commemorative envelope, US Navy; printed in green at right is illustratoin of battleship within chain motif frame and US shield at top; printed above "DON'T RELAX - KEEP BUILDING", and printed in scroll over shield "FOR NATIONAL DEFENSE" and printed below chain "A STRONG NAVY SECOND TO NONE"; printed lower right "DRAWN BY GEO. V. SADWORTH". World War II.