Our friends at our local Public Library of Cincinnati and Hamilton County let it slip today that they’re digitizing their local Sanborn maps and putting them online. They’ve already got two volumes scanned. Wondering what Sanborn maps are? The Sanborn company published them regularly from 1867 to 1970 to evaluate fire insurance liability in urban areas. Between publications, the company would issue updated maps on single sheets to be glued into a volume of maps.The maps are detailed street plans at a scale of 50 feet to one inch on large sheets of paper—one sheet shows about four to six city blocks. You can see building outlines, locations of windows and doors,...
http://www.cincinnatilibrary.org/