“The Zinc content of some food products” - Victor Birckner, undated

This series consists of 26 files of material written by Dr. Thom, with a few by his associates. They include manuscripts, typescripts, and related notes and correspondence for published articles, government reports, lectures, and conference presentations. Subjects include food and soil analysis, the activity of molds, and issues in the history of mycology and microbiology. There are 8 files of a complete typescript of A Manual of the Penicillia co-authored with Kenneth Raper.