SANBORN.MAPTCHA.ORG
Sanborn AtlasChoose a page of the 1905 San Francisco Sanborn Insurance Atlas to align with a map from today. Hello, people of KQED. We’ve got some hard ones for you below! Over 400 of you helped place these Sanborn maps last month, and now we’re down to the difficult ones: burned pages, streets that no longer exist, and pages with more than one map on them. Dig in and join the fun! Michal Migurski, August 16. Help add some geography back to the famous 1905 Sanborn Insurance Atlas! And the David Rumsey Map Collection.
http://sanborn.maptcha.org/


