This series consists of handwritten letters by Carter H. Harrison III (1825-1893), Harrison's father. Most are personal letters written to his wife, mother, and other family members. Many of the letters were written while Harrison's father was traveling abroad, including almost all of those from 1851-1853 and 1887-1888. For many of the other years there are only one or two letters, and there are not any letters from the Civil War period. Harrison wrote short notes on a few of the letters summarizing their contents or providing some background information.