#OTD in 1924: Transcontinental Air Mail
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService
July 1, 2025 at 12:26 PM
#OTD in 1924: Transcontinental Air Mail
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService
#OTD in 1924: Transcontinental Air Mail
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService
July 1, 2026 at 1:26 PM
#OTD in 1924: Transcontinental Air Mail
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService
U.S. Post Office Department map of the First Transcontinental #AirMail Route involving both day and night flying over the entire route opened July 1, 1924. The #CooperCollection of #AeroPostalHistory
#SaveTheUSPS #USPostalService