This decorative airmail envelope, part of the Moon/Sammiet family's WWII letters collection, reveals its origin as repurposed retail stationery from 'Katz of Pittsburgh,' a department store whose branded paper was reused for personal correspondence during a period of wartime paper conservation. The red-and-blue airmail striping on its edges reflects the urgency and importance placed on fast mail delivery between servicemen and their families during the war. Project: 218346