| Border Crossing Records |
| Borderlands Books |
| Borderlands History / Historia de la frontera |
| Cano Genealogy |
| Genealogy Planet: United States |
| Genealogy Society of Hispanic America |
| Guerrero Viejo Genealogy / Genealogía de Guerrero Viejo |
| Hispanic Genealogy Center |
| Legado Latino |
| Lineages / Linajes |
| Society of Hispanic Historical and Ancestral Research |
| US Census Bureau: Hispanic Population |
| US GenWeb |
| Vital Records for United States |
| Yahoo Groups: |
Arizona Genealogy: Birth and Death Certificates |
Documentary Relations of the Southwest |
Mexico/Arizona Biographical Survey |
Mexican American Studies & Research Center |
California Missions 2000 |
Los Pobladores 200 |
Spanish-Californian Genealogy / Genealogía hispano-californiana |
Southern California Genealogical Society & Family Research Library |