Denver Public Library Sanborn map resources for historic archaeology

The Denver Public Library's Western History & Genealogy collection holds Sanborn fire insurance maps for Denver dating to the 19th century. Archaeologists and historic preservationists routinely use these maps and associated city directories to identify former building footprints, property boundaries, and historical land use during urban excavations and surveys. The library provides public access to these primary sources which are frequently cited in Denver archaeological and historic-resource reports.