New York State Department of Taxation and Finance
https://www.tax.ny.gov/pit/mortgage/mtgidx.htm
Sullivan County Parcel Viewer
https://secure.sullivanny.us/IMO/index.aspx
Sullivan County Land Records Search
https://searchiqs.com/nysul/
Land Records Forms
https://sullivanny.us/Departments/Clerk/LandRecords/LandForms