I went to a presentation this afternoon at Central Library about the digital version of the Sanborn fire maps. These are maps that were created for fire insurance purposes from before the turn of the 20th century through the 1960s, showing details of each structure -- number of stories, footprint, building material, and sometimes the name or type of business. It's a valuable resource for trying to reconstruct what was where at a given point in time.

Tulsa City-County Library card holders have access to fire maps for Oklahoma online, from anywhere on the Internet, via this link. If you're not in a library, you'll have to log in with your last name and library card number.

I've got an idea for a series about lost downtown Tulsa, going block by block, telling what was on each block over the years before it was turned into asphalt. These maps, combined with city directories, will be a valuable resource. Just so no one else claims it, I'll give you my working title: "If Parking Lots Could Talk."