Comparison of Total Magnetic Field to Vertical Magnetic Gradient Data from Effigy Mounds National Park, Iowa by D.W. Johnson and W.J. Johnson, September, 2005. (215 Kbytes)

Application of Geophysics to North American Prehistoric Sites by W.J. Johnson and D.W. Johnson, September, 2005. (914 Kbytes)

Geophysical Survey as a Management Tool for Historic Properties by K. Kelley and D. W. Johnson, presented at the Society for Historical Archaeology, 37th Annual Conference, St. Louis, MO, 2004. (1,899 Kbytes)

Archaeology and Geophysics at the Silvernale Site (21GD03), Minnesota by D. W. Johnson, R. C. Schirmer, and C. A. Dobbs, presented at the Midwestern Archaeological Conference, 49th Annual Meeting, Milwaukee, WI, 2003. (1,659 Kbytes)

Geohazards Assessment, Egypt LGN Project, Nile Delta, Egypt  This project provided a probable cause for the sinking beneath the sea of the ancient cities of Herakleion and Menouthis.

Geophysical Characterization of Historic Sites, St. Mary's City, MD

Geophysical Characterization of Abandoned Mine Workings, Clarion, PA

Geophysical Survey at the Hill Historical Cemetery, Baden, PA

Geophysical Survey of LA 1674, Aztec Ruins National Monument, NM

Geophysical Survey at Historic Fort Ripley (21MO127), Morrison County, MN

Geophysical Survey at Fort Buford State Historic Site, ND

Red Wing Locality Paleoethnobotany, MN

Wabash and Erie Canal Botanical Analysis, IN

Paleoenvironmental Studies

Silvernale Site Studies, Red Wing Locality, MN