SOUTH DAKOTA Black Hills Legal Services Inc. 528 Kansas City Street P.O. Box 1500 Rapid City, SD 57709 (800) 742-8602 East River Legal Services 335 North Main Ave. Suite 300 Sioux Falls, SD 57104 (800) 952-3015 Dakota Plains Legal Services Inc. 160 Second Street P.O. Box 727 Mission, SD 57555-0727 (800) 658-2297