Image: Transcontinental Air Mail Map 1924
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Description: U.S. Post Office Department map of the First Transcontinental Air Mail Route involving both day and night flying over the entire route opened July 1, 1924. Source: The Cooper Collection of Aero Postal History
Title: Transcontinental Air Mail Map 1924
Credit: Unknown sourceUnknown source
Author: Unknown authorUnknown author
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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