December 7, 1861 to May 22, 1881. Harrington was a member of the territorial legislature, and mayor of American Fork, Utah for years. He often writes of his involvement in politics. Entries consist of his daily activities and usually include the weather, meetings attended, sermons heard or preached, any trips, deaths, marriages performed, and leisure activities. Harrington expresses much concern over the Civil War at the beginning of the dairy. He records the conviction, sentencing and public execution of Jason R. Luce, a member of William Hickman's posse in 1863 and comments on the death of Brigham Young in 1877. Harrington also records public sentiment about Daniel H. Wells' brief prison stint for contempt in 1879 during the Miles polygamy case and the murder of Elder Joseph Standing, who was killed while on a mission to Georgia with Elder Rudger Clawson.