I used this book in my search for the Tompkins. I found it at the NYG&B library which is now at the New York Public Library. Do a search on google book to find a copy to purchase. FAMILIES OF THE COLONIAL TOWN OF PHILLIPSBURG, WESTCHESTER COUNTY, NEW YORK, compiled by Greenville Mackenzie, 1966. Original manuscript is at the Westchester County Historical Society, 2199 Saw Mill River Road Elmsford, New York 10523; the web site for the WCHS is http://www.westchesterhistory.com/. The complete undocumented book is 806 pages and has over 200 families mentioned. Here is a link the lists Mackenzie's sources. http://drucifer.net/GenFiles/Grenville_Mackenzie_Sources.html