Image: NPS pony-express-trail-map.pdf
Size of this JPG preview of this PDF file: 800 × 147 pixels. Other resolution: 320 × 59 pixels.
Original image (6,755 × 1,240 pixels, file size: 6.75 MB, MIME type: application/pdf)
Description: Pony Express map, a route protected today by the National Park Service as the Pony Express National Historic Trail. Mail could reach California from Missouri in ten days across eight states.
Usage Terms: Public domain
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