This is in response to an old post. I am the grandson of Neil and Mary Van Der Sluys. Mary was maried previously to my grandfather Roy Clark. She and Neil lived in Wycoff then Swartswood Lake. Mary died in 1966. Neil died sometime in the 1970's. He had a son Matt, and a daughter Wilhelmina.
If you would like further info, please contact me at this e-mail address.