2026-04-21    Discovering Sanborn® Insurance Maps: As the Sanborn® Map Company went about creating maps of properties for fire insurance in over 13,000 towns, it was at the same time creating a valuable reference for genealogists. This blog article by Kimberly Powell explains how to find these color maps online in 28 U.S. states, as well as Canada and Mexico, from 1880 to 1925. To learn more about maps in research, see Goal A2 in the United States page.