New York State Department of Taxation and Finance
https://www.tax.ny.gov/pit/mortgage/mtgidx.htm
Sullivan County Parcel Viewer
https://beacon.schneidercorp.com/Application.aspx?AppID=1330&LayerID=45411&PageTypeID=2&PageID=17808
Sullivan County Land Records Search
https://searchiqs.com/nysul/
Land Records Forms
https://sullivanny.us/Departments/Clerk/LandRecords/LandForms
