Locations Oklahoma City, Oklahoma 3400 South Mabel P.O. Box 95325 Oklahoma City, Oklahoma  73143 (405) 677-5781 (800) 654-4704 Fax (405) 670-1913 Click here for driving directions Great Bend, Kansas RR #1, West 10th P.O. Box 1463 Great Bend, Kansas  67530 (316) 792-8223 (800) 362-0913 Fax (316) 792-2028