There is a published Van Dusen Genealogy:
"Van Deusen Family" by: Capt Albert Garrison Van Deusen
The NY State Library in Albany has copies, and many local NY Community Libraries. You can order the 2 vol set from "www.HigginsonBook.com
" online, they custom print to order out of print books.
I hav no affiliation with them, but that is where I ordered my set. I have 1770's Van Deusen/Weatherwax marriages.