Alameda County Historical Society - Holds quarterly dinner meetings and conducts field trips; publishes Alameda County Historical Society Quarterly; conducts ongoing preservation programs. Contact Alameda County Historical Society, PMB 307, 484 Lake Park Ave., Oakland 94610; phone 444-2187, fax 444-7120.
Hayward Area Genealogical Society - Meets monthly from January through October on the fourth Tuesday, 6:30 - 8 p.m. in the San Lorenzo Library, 395 Paseo Grande (you don't have to be a member to attend). The society publishes a monthly newsletter, The Informer, from January through November. H.A.G.S., PO Box 754, Hayward 94543, or call Carl Webb at 351-3335.
Hayward Area Historical Society - Preserves Hayward history, including San Lorenzo. Operates a museum, library, and bookstore (22701 Main Street, Hayward), as well as the restored McConaghy Estate, a private residence built in 1886 (on Hesperian Boulevard near Bockman Road). The Society holds regular meetings and social functions and publishes a quarterly magazine, "Adobe Trails," which contains articles on local history. Local residents are encouraged to join. Call 581-0223.
San Leandro Historical Society - Contact Vice-president Chuck Pershing (chuckpershing[AT]yahoo.com) or Nancy Fong at the San Leandro Public Library, 577-3947. SLHS, P.O. Box 1046, San Leandro 94577.