​Helen M. Gilkey Papers, 1907-1974
These papers were generated and collected by Helen Gilkey, professor of botany and curator of the Herbarium at Oregon Agricultural College until her retirement in 1951. Gilkey's botanical drawings and plant identifications made her a well-known expert in the field. The papers include scientific illustrations, many drawn by Gilkey, and her thesis Oregon Mushrooms with hand-drawn and colored illustrations. More about Gilkey can be found in the Oregon State University Memorabilia Collection, Box-Folder 78.16: Gilkey, Helen, 1930-2004 and Box-Folder 180.23: Gilkey, Helen (oversize), 1930-2004.

Marian Field Collection, 1936-1982
The Marian Field Collection consists primarily of botanical drawings by Field for a Works Progress Administration (WPA) project. Most were drawn as a Works Progress Administration (WPA) project between 1936 and 1941 for Frank Sipe, a botanist at the University of Oregon who had hoped to publish a book using the drawings.

Bonnie B. Hall Botanical Prints, 1989-2003
Bonnie B. Hall Botanical Prints consist of serigraphic screen prints created by Bonnie Hall, a scientific illustrator and artist.  Hall was well known, particularly for her botanical prints and was a scientific illustrator for the Department of Entomology at Oregon State University from 1963 -1993.  

Oliver Matthews Collection, 1905-2013*
The Matthews Collection consists of scrapbooks and trip logs pertaining to Oregon trees, logging methods, and wood products. The scrapbooks, arranged by species or other subject, include correspondence, clippings, photographs, and postcards. The logs contain day-by-day and mile-by-mile information on trips taken by Matthews in his search for botanical specimens, wood samples, and rare or large trees. The logs include maps, photographs, correspondence, trip narratives, receipts., and botanical drawings.

Nursery and Seed Trade Catalogs Collection
The Nursery and Seed Trade Catalogues Collection consists of more than 2200 flower and seed catalogues produced by nurseries and seed companies in the United States, Great Britain, Europe and Asia from the mid-19th century through the 20th century. They are a wealth of botanical illustration through these centuries.

Kareen Peiffer Laboratory Notes, 1930-1931
The Kareen Peiffer Laboratory Notes consist of laboratory notes and drawings made by Peiffer in botany and zoology courses at Oregon State College. Peiffer graduated from Oregon State in 1934 with a degree in education.

Fritz Marti Papers, 1909-2009*
Fritz Marti (1894-1991), was a Swiss-born philosophy professor highly regarded as an expert on post-Kantian idealism. His student gymnasium notebooks contain illustrations for his botany studies (Series 2).