Aerial Photo for Butler County, locality Pontiac, El Dorado, location T. 25-26 S., R. 6-7 E, quadrangle Pontiac, project GS-VENV. Date of photo 1978-03-21. Other info Flights 1 and 2 NS 20002. Range of sheets 26-29; 13-11. Number of sheets 7. Photo is located at T. 25-26 S., R. 6-7 E