I just received a number of copies from the Westchester Historical Society, from Mackenzie's manuscript. They had a form online for research it listed the cost as $15, I listed the pages for each of the Family names I needed from their online index and mailed off a check with the form. In about a week I had all the copies in my hands, I sent for 6 surnames and was very happy with their fast work. Thanks, Carol L. Heap, FL