1. Report to National Park Service, Eastern Applied Archeology Center, Silver Spring, MD;ML Alterman,1995
2. Report to National Park Service, Eastern Applied Archeology Center, Rockville, MD;J Balicki,1991
3. Report to Mrs Donald C. Graham, York, PA;HL Ballweber,1991
4. Barba, Luis, Karl Link, Agustin Ortiz, and Albert Hesse 1996 Magnetic Study of Archaeological Stone Foundations at Loma Alta, Michoacan, Mexico. In Expanded Abstracts with Biographies, 1996 Technical Program, pp. 786–789. Society of Exploration Geophysicists, Tulsa, OK.
5. Report to the National Park Service, Philadelphia, PA;KJ Basalik,1990