Applied Ground Imaging Ltd. (1996). MACTEC Little Bighorn Battlefield, Montana, Deep Raving, Reno Hill & Graveyard Ground Penetrating Radar Survey, August 19-20, 1996. Ms. on file, Little Bighorn Battlefield National Monument, Crow Agency, Montana.

De Vore, S.L. (1997). Metal Detection Survey of Site 24BH266, the Grapevine Fortification Site, Big Horn County, Montana. Ms. on file, National Park Service, Intermountain Support Office-Denver.

Faflak, R. (1995). Report of GPR Investigations at Golden Eagle Quarry Site (24MA1587), Salish Tears Quarry Site (24MA166) and Site 24MA1376, Madison Co., MT. Ms. on file, Montana Historical Society, Helena.

Faflak, R. (1994). Report of GPR Investigation at Willow Swamp, Madison Co., MT. Ms. on file, Montana Historical Society, Helena.

Faflak, R. (1993). Report of GPR Investigation at Flying D Ranch, July 1-2, 1993. Ms. on file, Montana Historical Society, Helena.

Geo-Recovery Systems (1991). Report of Geophysical Investigations: Archeological Impact Study of Fort Benton National Historic Site, Fort Benton, Montana. Geo-Recovery Systems, Incorporated, Golden, Colorado. Submitted to Heritage Research Center, Ltd., Missoula, Montana.

Weymouth, J.W. (1993). Searching for Fort Ellis, Bozeman, Montana: Three Seasons of Magnetic Surveying. Report submitted to the Museum of the Rockies, Montana State University, Boseman.