- Ancestry
- FREE Ancestry New York (Directions to Creating Account)
- Delaware County, NY Genealogy & History Site
- Family Tree Magazine 101 Best Genealogy Websites 2012
- Family Search
- Find-A-Grave
- Fulton History (local newspapers)
- Heritage Quest (FLLS Database)
- Library of Congress Digital Collection
- MyHeritage Super Search
- New York Heritage
- New York State Historic Newspapers
- Search IQS (public records for Cortland County)
- RootsWeb
- US Gen Web Project