Alvin J. Johnson was a publisher of maps and atlases from 1854-1887, under the names A.J. Johnson, Johnson and Browning and Johnson and Ward. His Atlases and the maps of the various states in the United States have become collectible and are avidly sought by collectors and historians alike. Many state maps have been removed from Johnson's Family World Atlases and are collected in this form by collectors. The Johnson U.S. Map Project has created a data set of the changes in Johnson's U.S.
Digital Sanborn Maps, 1867-1970 provides access to more than 660,000 large-scale maps for more than 12,000 American towns and cities. Sanborn fire insurance maps are the most frequently consulted maps in libraries, and are valuable historical tools. In electronic form, Sanborn maps allow users to easily manipulate the maps, magnify and zoom in on specific sections, and layer maps from different years.
