The Tulsa City-County Library's Central Library has geological maps on the state, national, and international levels. These maps, which are mainly published by state or national geological societies, are located in the Research Center.
The Research Center's geological and mineral maps are arranged alphabetically by country or state in map cabinets. Each drawer includes an index of the maps found within that drawer. In general, geology maps are on top, followed by oil and mineral maps, and then miscellaneous maps. There is also a full set of indexes in the geological map indexes vertical file.