Protestant Dutch Reformed Church of Flatlands (New York, N.Y.). "325th anniversary celebration : Pieter Claesen Wyckoff to New Amsterdam, March 4, 1637 [and] 25th anniversary Wyckoff Association in America, March 4, 1937-March 4, 1962." Book. 1962. Columbia Digital Library Collections [Columbia University Libraries]. Accessed 18 Mar 2024. https://dlc.library.columbia.edu/catalog/cul:ttdz08kptf