The collection consists of four sets of records: account books of James Monroe Blossom's store in Boise, Idaho, 1864-1866; account books of James Monroe Blossom, Jr., detailing grocery and clothing sales in Douglas County, Oregon, 1871-1873; a ledger of mining claims in Jackson County, Oregon, 1853-1856; and docket books from an unidentified Oregon circuit court, probably that of Jackson County, dating from 1861-1881. The connection between the court records and the Blossom family is unclear, but they may have been kept by James Monroe Blossom, Jr. when he served as a law clerk. Also included is an account book of 1855-1857 that includes details on the sale of apples; letters of recommendation for Robert Blossom, 1896-1897; and various membership certificates.