File:Butterfield Overland Mail map.jpg

Description: Butterfield Overland Mail Company map. Drawn by: Butterfield Overland Mail Company. Date: 1859. Source: “Butterfield Overland Mail Company map” in Smithsonian National Postal Museum at http://www.postalmuseum.si.edu/museum/1d_Butterfield.html (accessed 4 July 2009). Permission: Copyright expired. This image is in the public domain because its copyright has expired. This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years.

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