Ornithologists Richard Graber(Illinois Natural History Survey) and Jean W. Graber (Department of Animal Science) during the 1970s and 1980s, published a series of Illinois Natural History Survey Biological Notes on Illinois birds by family. The Grabers also performed a census of Illinois bird populations 1956-1958 to update the survey performed by researchers at the Illinois State Laboratory of Natural History 1906-1909. This work was published as Illinois Natural History Survey Bulletin volume 28 no. 3 in 1963. Photographs from their survey work and their papers are held in the University Archives.