- Chautauqua County Government
- Chautauqua County Visitors Bureau
- Harmony Historical Society
- Town of Harmony
- Town of North Harmony
- Panama Central School
- Books Series In Order– list the series of every book in order.
- BookSeries.org – provides full and comprehensive listings of every author and series they have ever written in both publication order and chronological order.
- CREDO Reference
- New York Driving Tests
- lendedu [Student Load Consolidation]
- Reference USA
- Worldcat.org [library catalogs]