This collection contains correspondence, receipts, account books, and diaries relating mainly to Arnold W. Miller, a Saginaw County, Michigan, farmer. The bulk of the correspondence consists of letters from friends and relatives of Miller, residing in Kansas, Vermont, and Massachusetts. The letters include information on agricultural and business conditions, as well as the family's intense interest in spiritualism. One folder contains correspondence from Jasper Miller, who corresponded with Arnold from the spirit world via a niece who was a medium. Jasper Miller, Arnold's brother, was born September 28, 1826 in Westminster, Windham, Vermont and died April 1879 in Westfield, Orleans, Vermont. Three diaries document Arnold Miller's term of service with Company G of the Third Michigan Cavalry in the Civil War.