Papers of the Abraham and other members of the Ten Eyck and Cuyler families and businesses in the City of Albany and surrounding region.

Papers and records of the Ten Eyck and Ten Broeck families, business records of Johannes Beekman, business and political correspondence of Leonard Gansevoort and business records of Cuyler-Gansevoort firm as well as other records relating to the military, land transactions, the Watervliet Turnpike Company and other topics.