Pony Express First Day Cover Color Slide, Aug. 12. Slide transparency of Pony Express mail covers donated by U.S. Philatelic Society in 1974.
Elliptical hand stamp: Pony Express running rider, St. Joseph, Aug. 12
Addressed to:
Mess. Crosby & Dibbler
San Francisco, Cala.
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Pony Express Stamp, Pony Express First Day Cover, United State Philatelic Society