The Ranney Yale Lyman Papers consist of a biography of Lyman by his wife Mabel Kelsey Lyman, a reminiscence (1970) also by her, general correspondence (1916-1953), survey field diaries (1913-1950), expense account books (1914-1922; 1946-1948), a record of Lyman's employment as a surveyor (1901-1950), lists of survey crew members and locations (1903-1949), and miscellany.