Here is my maternal grandfather here..............who worked for USPS for 30 years...........he retired as the assistant director of philately.............stamp collecting.........

NARA - AAD - Display Partial Records - Black and White Still Picture ...

aad.archives.gov/aad/display-partial-records.jsp?dt=278...

1. Cached

... presents the card and canceling device of the Apollo 15 crew canceled on the Moon to the US Postal Service; Paul Ruddell. The stamp commemorates Apollo ...

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The Circleville Herald from Circleville, Ohio on August 24, 1971 ...

https://www.newspapers.com/newspage/80131068/

1. Cached

Aug 24, 1971 - Paul Porter, who had headed the Office of Price Administration, and .... stamp and envelope, canceled on the Moon by Apollo 15 astronauts David Scott ... Irwin, to Paul Ruddell, U.S. Postal Service Philatelic Affairs Division, ...