Correspondents include E.B. Fred, Martin Gillen. Correspondence deals with and includes article on History of Hydrobiology, Alumni matters, property matters, proposal for Biological Research Station at the Gillen Preserve, Report of the National Research Council for 1939-1940.

Correspondents include Martin Gillen, L.M. Hanks, E.M. Gilbert, Chauncey Juday. Correspondence deals with and includes comments on actions of Conservation Commission, publication of Fern Manuals, faculty matter, Wisconsin Arboretum.

Correspondents include Chauncey Juday, Martin Gillen. Correspondence deals with and includes fish studies, information on lakes, report by Juday on Cooperative Investigations of Wisconsin Lakes.

Correspondents include Martin Gillen, J. E. Potzger. Correspondence deals with and includes forest study, map of Killarney Point Lakes, Gillen Nature Reserve.

Correspondents include B. M. Duggar, Martin Gillen. Correspondence deals with and includes Annual Announcement of Marine Biological Laboratory, printed material about Marine Biological Laboratory.

Correspondents include Joe Evans, Martin Gillen, G. William Longenecker, H. L. Russell. Correspondence deals with and includes Conservation Commission matters, orchids, horticulture, unpublished prose by H.L. Russell entitled "A Five Hundred Mile Trip to See a Flower."

Correspondents include W.L Gold, W.B. Chilsen. Correspondence deals with and includes activities of the Women's Voters League.

Correspondents include D. Richard Young, Martin Gillen. Correspondence deals with and includes corporations, Short form.