This collection contains thirty-nine letters written to and by John M. Cannon, a Salt Lake City attorney. There are business letters and personal correspondence. The business letters deal mainly with business: mining, ranching, buying and selling of farm land, closing of bank accounts, etc. The contents of the collection span the years between 1893 and 1914 and are arranged chronologically.

Handwritten autobiography and a photocopy of the item. Also included is a typescript of an autobiography. The handwritten manuscript is a running account similar to a diary but is seldom broken down into daily entries. Day writes about joining the Mormon Church in England and his migration to Council Bluffs, Iowa, and later to Utah. He lived in Salt Lake Valley, Spanish Fork, and Circle Valley, Utah. He participated in the Salmon River Mission for the Mormon Church in Idaho.

Typewritten copies of diaries, an autobiography, and a history. The diaries include an "Abridged History of the Salmon River Mission" which is Moore's journal for 1855 when he was serving in the mission. Also included are "Items of History" which tells about the early settlements in Weber County, Utah, and an autobiography to the year 1849 when Moore's diary begins.