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The Blanchard family papers document the lives and careers of several members of the Blanchard, Cobb, and Proctor families from the mid-nineteenth century through the late twentieth century. Includes visual materials, publications, personal writings, and extensive correspondence files.

The Blanchard Family Papers document the professional achievements and personal lives of several generations of a scientifically minded and artistically gifted family. The papers focus heavily upon the eminent plant pathologist and nematologist Nathan A. Cobb, his wife Alice Vara Cobb, their daughter, biologist Frieda Cobb Blanchard, and her husband, herpetologist Frank Nelson Blanchard (the latter two of whom were professors at the University of Michigan). In addition to the photographs, drawings, correspondence, journals, and writings of these four individuals, the collection is rich in family correspondence, diaries, and personal papers from other members of the Cobb and Blanchard families (and their forebears and branches, including the Bigelow, Proctor, Ross, White, and Randall families). The Blanchard Family Papers will be of value to researchers interested in a variety of topics: scientific endeavors and methodologies (and in particular those related to agronomy, nematology, botany, and herpetology); the visual arts and the development of photography in the late nineteenth and early twentieth centuries; colonial and provincial life in Australia and Hawaii (respectively); and the daily affairs of American (and Michigan) families throughout the twentieth century. The Blanchard Family Papers consist of seven series: Nathan A. Cobb, Alice Vara Cobb, Frieda Cobb Blanchard, Frank Nelson Blanchard, Blanchard and Cobb Family Letters, Other Family Members, and Isaac G. Blanchard.

Papers of David M. Dennison, professor of physics at the University of Michigan; contain lecture notes and exam materials, correspondence, speeches, files relating to research in theoretical physics, University of Michigan and travel files.

The David M. Dennison Papers contain both the personal correspondence of the Dennison family and items relating to David M. Dennison's research and teaching while at the University of Michigan.

The first part of the collection is correspondence from 1894-1896 from James Lutheran Dennison and his wife to their son Walter Dennison, the father of David M. Dennison. One folder contains correspondence from George Dennison and his wife Nina to his brother Walter Dennison also from the 1890s.

Biographical and personal materials for David M Dennison are comprised of letters from David M. Dennison and his wife, Helen Lenette Johnson, memorial materials from David's death, home finances, and travel information. Family documents in this collection are comprised mostly of his son Edwin's Ph.D. research at the University of Michigan. Dennison's papers include various speeches, articles, and other writings about the physics he was studying, primarily focused on the later part of Dennison's time at the University. Materials from the University of Michigan include lecture notes and exams from the many physics classes Dennison taught. Documents relating to administration of the physics department and David's colleagues are also a part of this collection. Of note is David and Helen's correspondence and connection to the Niels Bohr Institute.

Audio-visual materials in the collection include photographs of David and Helen from the early 1900s through the 1970s. There are also two cassette tapes with recording of talks given by David, as well as photograph negatives and spectroscopic plates, lantern slides depicting astronomical images pertaining to his astro-physics research.

Papers of Juris Upatnieks, a University of Michigan scientist who helped to lay the foundations of holography, a photography technique that recreates the recorded objects with all of their three-dimensional optical properties. Collection includes Upatnieks correspondence with American and international scientists and companies, scientific papers, proposals and technical reports, sometimes prepared in collaboration with other scientists, as well as digitized laboratory notebooks and lantern slides illustrating his research on various subjects.

The collection documents Juris Upatnieks' scientific research and output and divided into six series: Correspondence, Subject Files, Proposals, Reports, Lantern Slides, and Laboratory Notebooks.