Collections : [University of Michigan Bentley Historical Library]

Ann Arbor, Michigan, family. Family correspondence of Carl, physician and geologist, his wife Frederika, his son Louis, and his daughter Julia; journals, 1861-1905, of Carl Rominger, including notes on his expeditions as State Geologist of Michigan, and other travels through New York, Missouri, Arkansas, Kentucky, and Ohio; and miscellaneous scrapbooks and account books; also photographs.

The collection has been arranged into the following series: Biographical and genealogical material; Correspondence; Miscellaneous and other papers; Notebooks from courses at Tübingen, 1839-1842; Carl L. Rominger notebooks and journals, 1861-1905; and Drafts and manuscripts of various writings.

The notebooks and journal are especially rich documenting Rominger's interest in geology, paleontology, and allied fields in New York, Missouri, Arkansas, Kentucky, Ohio, with the bulk pertaining to Michigan where Rominger served as state geologist.

Hamburg, Livingston County, and Ann Arbor, Michigan, family. Correspondence, newspaper clippings and photographs of the Lohmiller, Twichell, and Hollister families.

The papers of the Twichell family document three generations of the extended Twichell families. It includes extensive correspondence files, reminiscences of life on turn-of-the-century Michigan farm and of student life the University of Michigan, files relating to the family businesses including boardinghouses in Ann Arbor, and photographs of family members, towns in Michigan, and University of Michigan students. The collection has been arranged into the following series: Correspondence, Alphabetical Files, Photographs, and Sound Recordings.