The collection (1967-1997, undated) contains biographical information and professional correspondence. The collection also contains a number of Dr. Manwiller’s professional publications that focus on his work with properties of pine, oak, and maple.

The collection (1950-2007, undated) contains biographical information and professional correspondence. The collection also contains a number of Dr. Thomson’s professional publications. These publications focus on Dr. Thomson’s work with management, range management forest photogrammetry, forest history, and Midwestern forest history.

The collection (1953-1969) contains biographical information. The collection also contains an assortment of Dr. Gatherum’s professional publications that focus on his work with Range Management and Plant Physiology.

The collection (1972-1978, undated) contains biographical information. The collection also contains papers and research proposals relating to Dr. Promnitz’s interests in statistical models for tree growth.