Chickasaw National Recreation Area
- A unit of the National Park System established in 1906 to provide for the protection of its unique recreational, cultural and natural resources, including springs, streams, lakes, hiking trails and historic structures.
- http://www.nps.gov/archive/chic/home.htm

Wichita Mountains Wildlife Refuge
- U.S. Fish and Wildlife Service wildlife refuge with hiking, wildlife observation, photography, picnicking, camping, and other outdoor recreation opportunities. Includes history and image gallery. Located north of Lawton - Fort Sill.
- http://www.fws.gov/southwest/refuges/wichitamountains/

Washita Battlefield National Historic Site
- Washita Battlefield National Historic Site protects and interprets the site of the Southern Cheyenne village of Peace Chief Black Kettle that was attacked by the 7th U.S. Cavalry under Lt. Col. George A. Custer just before dawn on November 27, 1868.
- http://www.nps.gov/waba/

Oklahoma Parks, Resorts & Golf
- Complete guide featuring listings of resort parks, parks with cabins, state parks and golf courses including rates and reservations, calendar of events, and region map.
- http://www.touroklahoma.com/