Aerial Photo for Morton County, locality Richfield, location T 33 S; R 40-42 W, quadrangle Wilburton NW, project GS-SWFD. Date of photo 1971-11-11. Other info Flights. 1-4 NS 6700. Range of sheets "1:15-10, 73-79, 104-99, 2:30-35". Number of sheets 25. Photo is located at T 33 S; R 40-42 W