The Leo Alva Snow papers cover the years 1870 through 1962. These papers consist of a variety of materials including blueprints, maps, notebooks, contracts, land survey records, photographs, and other miscellaneous items. Series I (1902-1908; 1958) contains his school work and notes from college courses. Series II (1905-1962) comprises documentation of contracted work on canal, irrigation, city water systems, and water appropriation. Series III (1870-1962) covers his work while contracted as a civil engineer, building engineer, and county surveyor, as well as his work for the Public Works Association. Series IV (1904-1961) covers the personal and business projects that Snow was active in, including his records of the St. George Garage Company and the Snow & Cannon Insurance Agency. There is also a small file on his family history and his activities in The Church of Jesus Christ of Latter Day Saints. The final series, Series V (1903-1937), contains the photographic prints of three photographers: John Moffitt Stewart, Leo A. Snow, and Clarence P. Snow. They document projects that Snow was involved in as well as Clarence's school days.