County assessor maps
The Tulsa County Assessor's office has online maps showing school districtboundaries and municipal boundaries. More impressive is the collection of maps showing subdivision boundaries, lot and block numbers, and lot dimensions. Each square mile is an Adobe Acrobat file.
It's nice to have those maps there, but I'm really impressed with SAGIS, the Savannah Area Geographic Information System, which allows for zooming in and out, and you can click on a lot and find out who owns it, what it's worth, how big the lot is, how it's zoned, and even who the city alderman and county commissioner are for that location. Another click takes you to the property card, with the physical characteristics of the buildings on the property. You can control layers of information on the map, and see property lines and zoning lines overlaid on an aerial photo. This is a great tool for property owners and potential buyers and investors. I hope we can get something like this for Tulsa very soon.