Post route map of the State of Colorado showing post offices with the intermediate distances and mail routes in operation on the 1st of October 1891. Shows counties, railroads, postal routes of various frequencies, special supply routes, and mail messenger routes. Relief shown by hachures and spot heights. "The service on this diagram brought up to date of Oct. 1st 1891."... , Colorado

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Size: 14543px × 11653px
Photo credit: © LM/BT / Alamy / Afripics
License: Licensed
Model Released: No

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