This is the alpha (prototype) launch of Pastmapper, a new platform for describing the world of the past. Read the Pastmapper blog.
Base Coast Survey map derived from scans from David Rumsey Historical Map Collection.
City directory data from 1852 A.W. Morgan & Company's San Francisco City Directory on Archive.org, digitized from San Francisco Public Library collection.
Data captured, formatted and standardized by Brad Thompson, Pastmapper, 2011.
Map integration code thanks to Derek Eder, with assistance from Mano Marks.
Pastmapper is made by Brad Thompson.