Collections : [University of Michigan Bentley Historical Library]

Ann Arbor German-American family, owners of the Allmendinger Organ Company which later became the Ann Arbor Organ Company. Correspondence, scrapbooks, family genealogy, photographs concerning family affairs, materials on Helene Allmendinger's radio show, examples of spirit messages received by Helene Allmendinger from deceased family members; information pertaining to the Ann Arbor Organ Company, and family members still living in Germany.

The collection is divided into the following series: Family records and correspondence; Helene Allmendinger papers; Ina Allmendinger papers; Ann Arbor Organ Company; Harriet Birch papers, Other family members; Miscellaneous, and Photographs.

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.