Collection, circa 1860-2003, consisting of reference materials and drafts prepared by Lieutenant Colonel Richard Rupley for his research into topics in Michigan and American history.

Papers, 1942-circa 2010, documenting the early life and military career of Robert E. Sherman, including personal recollections of his time on the Manhattan Project, local newspaper coverage of Hiroshima and Nagasaki, enlistment and discharge papers, and letters from superior officers and J. Robert Oppenheimer, among other materials.

Papers, 1852-2011, documenting the life of Thomas Howe, his family, and descendants, including original handwritten materials.

Letters and some course notes, 1870-1879, bulk 1875-1879, formerly owned by Thomas Stimpson of Massachusetts.