Papers of Richard Rex Graber (1924-1997) and Jean W. Graber (1924-2015), Wildlife Specialists and Professional Scientists at the Illinois Natural History Survey Center for Wildlife Ecology (1956-83) include publications by Richard and Jean Graber; Illinois bird species notes (in taxonomic order); nesting records; bird field observation by Graber (ca. 1956-87) or collected by Richard and Jean Graber from others (ca. 1903-87); notebooks and diaries of early Illinois Ornithologists Benjamin T. Gault (1873-1927), Alfred O. Gross (asst. to Stephen Forbes, 1907-09); and Thomas E. Musselman 1908-12, 1929-70); Illinois Christmas Bird Counts; habitat studies and censuses (ca. 1957-81), seasonal bird censuses (1964-81); audio detection of nocturnal migration (1957-60); corresp. with field note contributors for "Audubon Field Notes" (published by National Audubon Society) with field notes editors R. E. Mumford and Richard Graber (1958-62); bibliographical notes; and proof sheets and boards for publications by Richard and Jean Graber of maps, graphs, charts, drawings, and photographs.

... including bird lists and life lists for Illinois counties, Champaign County Audubon Society (CCAS, 1983-1993), Birdathon species lists, Extraordinary Bird Sightings/Unusual Bird Sightings (1987-2001), Illinois Breeding Bird Surveys and Breeding Bird Atlas Project (1986-1997), Illinois Ornithological Records Committee (1996), Illinois Audubon Society (1988), Illinois Observation Reports (2000-2001), and G.P. Waldbauer (1995).

This collection consists of personal papers from Stephen Alfred Forbes (1844-1930). The materials reflect life before, during, and after the Civil War; the University of Illinois at Urbana-Champaign during the late nineteenth and early twentieth centuries; and the accomplishments of Stephen A. Forbes in his academic and scientific career. The collection includes correspondence, photographs, published works, newspaper clippings, and other materials.

The collection comprises 12 series, including Correspondence, Civil War Material, Genealogical and Ancestral Materials, and Photographs. Although the collection dates from 1830 to 1992, the bulk of the material dates from the 1860s to the mid-1930s.