This collection consists of correspondence, legal documents, Frank Flemington's manuscripts and printed material.
The correspondence ranges from 1829 to 1945, but it is almost all family letters, the bulk to and from Mary Louisa Moore in the 1870s and 1880s. Most of the letters discuss family news and business, social events and religious activities. There are a few letters from the 1820s and 1830s between Edward DeWolfe and the New Brunswick government over questions of land ownership. Also included are letters from Sarah Wade, a pioneer in the Aroostook area, to her sister in St. David. There is also some correspondence from Leonard Scott, editor of "Blackwood's Magazine" in New York.
The legal documents include deeds, family marriage and baptismal records and some accounts (1847-1880), relating to the operations of the family mill at Moores Mills and a family-owned general store. Frank Flemington's papers include genealogical notes and charts, transcriptions of the records in the collection and an unpublished biography of John Moore. There is also a photograph album with captions added by family members.