Pony Express First Day Cover Color Slide, Aug. 8. Slide transparency of Pony Express mail covers donated by U.S. Philatelic Society in 1974.
Circular hand stamp: C.O.C. & PP Express, St. Joseph, Aug. 8
Addressed to:
George Wallace Esq.
San Francisco, Cal.
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Pony Express Stamp, Pony Express First Day Cover, United State Philatelic Society