The Moenkhaus mss., 1892-1918, consist primarily of the correspondence of zoologist William J. Moenkhaus, 1871-1947, former professor at Indiana University.
The Muller mss., 1910-1967, consists of the papers of Hermann Joseph Muller, 1890-1967, geneticist and Nobel prize laureate, including correspondence; writings and reprints; research and data from his work as well as from his students and colleagues; materials related to conferences; and work with various professional organizations.
The Nelson's Encyclopedia mss., 1946-1947, consist of an article on penicillin by Sir Howard Florey, and several letters about the article between Florey, geneticist Hermann Muller, psychologist and Northwestern University president Walter Dill Scott, and science editor at Nelson's Encyclopedia Myron R. Kirsch.
The Parker mss., 1264-1871, consist of commonplace books, legal records, account books, volumes on heraldry, rhetoric and logic, genealogy, sermons, political tracts, a diary, gazetteer and a jest book in verse.
The Parkin mss., 1900-1928, are letters from Thomas Parkin, British ornithologist, from prominent ornithologists, artists, novelists, statesmen, playwrights and authors.
The Root mss., 1815-1888, are papers of Riley Root, 1795-1870, teacher, surveyor, inventor, and author of Journal of Travels from St. Josephs to Oregon with Observations of that Country, together with Some Description of California, its Agricultural Interests, and a Full Description of its Gold Mines. Galesburg, [Ill.], Gazetteer and Intelligencer Prints, 1850 (Lilly F593.1 .R7).