File:Pacific Telegraph Route map, 862.jpg

Map depicting the Pacific Telegraph Route, which was the western half of the First Transcontinental Telegraph line in the United States.

Description: Map depicting the Pacific Telegraph Route, which was the western half of the First Transcontinental Telegraph line in the United States. The line was completed in 1861.

Artist: J. Calvin Smith, J. M. Atwood, map engraver.

Date:  1862

Source: 	"The New Naval and Military Map of the United States", by J. Calvin Smith, J. M. Atwood, map engraver, Philadelphia, Pa. 1862. 'Entered according to Act of Congress in the year 1862 by Robert P. Smith.' Library of Congress Geography and Map Division, Washington, D.C., via the website www.telegraph-history.org. Taken from Wikimedia Commons http://en.wikipedia.org/wiki/File:Pacific_Telegraph_Route_-_map,_1862.jpg

Permission: Public domain. 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.