Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.

Papers, 1888-2000, collected and produced by Dr. Allan M. Johnson during his career as student, professor, and research leader at Michigan Technological University in Houghton, Michigan. Includes research material, articles and photographs relating to different geological projects, scientific journals and papers. The majority of these pertain to minerals of the Upper Peninsula as well as the safety and environmental issues of local mines in the Upper Peninsula.