Company history, product overview, locations, and license information.

Located in Tulsa, and Broken Arrow. Helps pregnant and parenting teens complete their high school education.

Comprehensive geophysical observatory which records, identifies, and locates over 100 earthquakes in Oklahoma each year, and also records about seven worldwide earthquakes per day.

Overview, population characteristics, utilities, labor force, transportation, housing, tax structure, educational facilities, primary employers, industrial sites and buildings, and tourism points of interest.

Official Tulsa County government information site.