The Tappan DRC records were published and Indexed in Cole's Hidtory of Rckland County. A copy is in the New City Library. I also have a personal copy and can do lookups. There is an Ackerson-Eckerson genealogy also at the New City Library. Check the Webpages of the Genealogical Society of Rockland County for a complete reference. http://www.rootsweb.com/~nyrockla/GSRC/ Look under Genealogies in the Rockland Room of the New City Library. There is also an Ackerson/Eckerson Family Association. Check the links from the above Webpage for a list of Rockland Family Associations. Bob Protzmann