The collection contains Civil War letters, family correspondence, photographs, photograph albums, diaries, notes, school work, memorial cards, clippings, and financial documents (pension claims) documenting George M. Lanpher and Rufus G. Lanpher who both served in the Civil War. Activities of other members and later generations of the related families of Lanpher and Demeritt are also documented.

The Parker/Fleming Collection deals primarily with the descendants and relations of Charles Carrol Parker (1814-?), a Congregational minister who preached in various churches in Vermont and Maine, and Elizabeth Fleming Parker (1813-1979), his wife. The letters span the time period of 1835-1909, with the bulk of the collection lying between 1863-1879.