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Professor of engineering at the University of Michigan. Photos of Johnston's personal and family life in Wyoming and Michigan, including student activities at the University of Michigan; photos of his work on water projects in the West and in Egypt; and photos of Camp Davis, the summer engineering camp of the University of Michigan in Cheboygan Co., Michigan..

The Johnston collection spans the years of 1888-1928. The bulk of the collection is comprised of photographic prints, mainly cyanotypes, and glass plate negatives. Scattered papers are also present and include biographical material and topical files relating to Johnston's personal, religious, and professional activities. The collection has been arranged into five series, which include: Personal and Family Photographs, Work Photographs, Camp Davis Photographs, Glass negatives, and Biographical Materials.

Professor of civil engineering at the University of Michigan. Collection consists of 16mm film of activities at U-M's Cam p Davis in Wyoming with additional footage at Yellowstone National Park and Douglas Lake, Michigan.

Silent, 16 mm motion pictures, mainly of surveying and geological activities at Camp Davis, Wyoming, with additional footage at Yellowstone National Park and Douglas Lake, Michigan. All but one of the films are in black and white. In addition, there are five photographs of the annual Camp Davis Summer session participants for the years 1929-1933. The films were digitized in 2009. DVD versions are available for use in the reading and streaming files for selected films are available online.

Flint, Michigan industrialist; governor of Michigan, 1865-1868. Correspondence concerning land speculations, lumbering, and political activities; correspondence of his son primarily relating to estate and land holdings; speeches, notes and other papers detailing his gubernatorial administration; deeds and other papers concerning land purchases in Ohio, Iowa, and Michigan; newspaper clippings, biographical material and obituaries; journals, diaries, notebooks, letter book, political scrapbook, 1866-1869, executive journal of state of Michigan, 1865-1867, farm records and accounts; and photographs.

The Crapo papers have been arranged into the following series: Correspondence; Personal and Biographical; Political; Business records; and Miscellaneous (mainly financial). The collection relates primarily to the career of Henry H. Crapo with the files dating after 1869 pertaining to the business activities and political activities of his son W. W. Crapo.

In 1992, the bulk of the Crapo papers was microfilmed. This finding aid begins with a listing of the contents of the microfilm followed by a container listing of those portions of the collection which were not microfilmed. For reasons of preservation, the researcher should use the microfilm copy. Access to the original materials will be limited to the unmicrofilmed portions of the Crapo papers.