Series III: Carson Family Research contains material used by Dr. Judson Grenier for the exclusive purpose of researching the Carson Family, such as an accounting ledger, biographical information, census reports, discharge papers, estate maps, finances, hand written notes by Dr. Judson Grenier, invitations, letters, photographs, and more.

Series IV: Dominguez Family Research contains matierals used by Dr. Judson Grenier exclusively for research regarding the Dominguez Family such as biographical material, census reports, death notices, estate maps, finances, invitations, journal entry, letters, maps, news articles, notes, and more.