| Business | Phone |
| San Diego Genealogical Society 1050 Pioneer Way # E, El Cajon 92020 | (619) 588-0065 |
| Nynwa Club 115 S Mollison Ave, El Cajon 92020 | (619) 401-7200 |
| German American Societies Inc 1017 S Mollison Ave, El Cajon 92020 | (619) 442-6637 |
| Hacienda Recreational Club 1320 Hacienda Dr, El Cajon 92020 | (619) 448-9936 |