Sidewalk Otter Tail Power - DeSmet, SD Old 7-up sign Southeastern Electric - Viborg, SD Xcel Energy - Turner County, SD Weber Ave. sub site Northern States Power - Turner County, SD Sunset Otter Tail Power - Alice, ND Otter Tail Power - Casselton, ND Central City, NE municipal Otter Tail Power - Grant County, SD North Central Electric - Bottineau County, ND SD School of Mines memorial plaza Otter Tail Power - Sykeston, ND North Central Electric - McHenry County, ND Central Power Electric - Bottineau County, ND Northern States Power - Minnehaha County, SD Otter Tail Power Co. first office Otter Tail Power - Richland County, ND Otter Tail Power - Tyler, ND Great River Energy - Otter Tail County, MN Northern States Power - Raymond, MN Xcel Energy - Pipestone, MN Northwestern Energy - Chamberlain, SD Half a house? Wessington Springs, SD municipal Northwestern Energy - Beadle County, SD Otter Tail Power - Lake Preston, SD Otter Tail Power - Lake Norden, SD Otter Tail Power - Hammer, SD Otter Tail Power - Veblen, SD Otter Tail Power - Hillhead, SD Otter Tail Power - Roberts County, SD Hecla, SD municipal Hecla, SD municipal Hecla, SD municipal Montana-Dakota Utilities - Leola, SD Montana-Dakota Utilities - Leola, SD Northwestern Energy - Holmquist, SD