Scanning and georeferencing historical USGS quadrangles

http://pubs.usgs.gov/fs/2011/3009/

We are scanning all scales and all editions of approximately 250,000 topographic maps published by USGS since the inception of the topographic mapping program in 1884. They will be available to the public at no direct cost.

by Allord, Gregory J. and Carswell, William J. Jr.

U.S. Geological Survey Fact Sheet 2011-3009

This publication is available only as a PDF document.