"Contact Us For All Your Real Estate and Auction Needs" High Plains Alcorn Realty & Alcorn Auction Service 109 Main St., Suite C, Spearfish, SD 57783 (605) 642-0680 FAX (605) 642-0765 Email (jalcorn@blackhills.com) or fill out our CONTACT SHEET for more information on any of our listings or to p...