Correspondence and miscellaneous business papers including Civil War letters exchanged between John C. Buchanan and his wife, Sophia Bingham Buchanan, while he was serving as first lieutenant in Co. D. of the 8th Michigan Infantry. Many of the letters are almost sermons and philosophical essays about his home and family, religion, his country and the war and its leaders. Others are detailed descriptions of camps and camp life, such as Seabrook plantation in South Carolina and its Negroes, James Island and its reptiles; his quarters and food; sea transports; marches, skirmishes and battles with the Army of the Potomac in the Maryland campaign and around Fredericksburg. The collection also includes letters from Claude Buchanan while he was a student at the University of Michigan; letters (1847-1858) of J. Irwin Beaumont of Mississippi and Minnesota to Angie Bingham (Gilbert); notebooks, speeches, business papers, and a diary of a trip to the South in 1884 made by Claude Buchanan.