Collin County
- Cemeteries of Collin County Texas
- Collin County TX
- Collin County TX – GIS Interactive Map
- Collin County Clerk’s Office
- Collin County TX USGenWeb-Archives
- Collin County TXGenWeb Site
- Collin County FamilySearch Wiki (list of records available)
- Plano Public Library System (PPLS)
- Genealogy Center Plano Public Library
- The Lewis Family of Collin County TX
- Melissa Cemetery
- Texas Railway System Map
North Texas Organizations
- Collin County Historical Commission (CCHC)
- Dallas Genealogical Society
- Fort Worth Genealogical Society
- Grand Prairie Genealogical Society
- Heritage Association of Frisco
- Mesquite Historical & Genealogical Society
- Mid-Cities Genealogical Society
- North Collin County Genealogical Society
- Collin County History Society & Museum formerly North Texas History Center
Collin County & More
- Genealogy Center Dallas Public Library One of the top 10 Genealogy Collections in the U.S.
- Orphan Train Riders to Texas & Beyond
- The U.S. Serial Set
- The American State Papers
- World Digital Library
- NARA Resources for Genealogists and Family Historians
- National Genealogical Society
- Texas State Genealogical Society
- Texas Historical Commission
- Portal to Texas History
- Bureau of Land Management Federal Land Records
- FamilySearch
- Lone Star Junction
- RootsWeb
- Texas Digital Archives – A wealth of genealogical and historical collections
- Texas General Land Office – Early Texas Land Records and Maps
- Texas State Library and Archives Commission – Online Records Collections