Harmen Harmanse was the patriarch of the Gansevoort family in Albany, New York, arriving in the area by 1657. Although not the first Ten Eyck in America, Jacob C. Ten Eyck was the first to come to Albany, moving from Manhattan after 1654. The two families intermarried several times over the years, along with other Dutch families in the area. This collection includes correspondence, financial records, estate records, and other family-related information.

The Schuyler Family was a prominent Dutch family in New York and New Jersey, with Philip Pieterse Schuyler immigrating to New Netherland and settling in Beverwyck before 1650. The family was connected by marriages to many of the other original settlers of New Netherland, and several members played important roles in the development of the new country. This collection contains correspondence, wills, estate records, and other documents.

When Stephen van Rensselaer inherited the rights to the Manor of Rensselaerswyck in 1785, a survey of the holdings was made. The holdings were divided into two parts: the East Manor and the West Manor. The East Manor consisted of the areas known as Elizabethtown (Brunswick), Phillipstown (Nassau), Roxborough (Grafton), Greenbush, Schodack, Stephentown, Middletown, and Little Hoosick. This collection contains correspondence, financial records, reports, advertisements, troop rosters, property records, inventories, and other related materials.