The History Corner

Blackwell Educational Museum. (2005). College of Education. DeKalb, IL: Northern Illinois University.Google Scholar

Davenport, O. B. (2005). Troemner Analytical Balance No. 50. AECT Archives Paper, ETT 640. DeKalb, IL, Northern Illinois University.Google Scholar

Shannon, J. M., & Shannon, G. C. (2005). Paselk Scientific Instrument Museum. Humboldt State University, Department of Chemistry. Retrieved July 2, 2007, from http://Humboldt.edu/~scimus/Manufac/Troemner/