The Alameda County Sheriff's Office Archive (ACSO Archive) in Dublin is run by volunteer, retired sheriff's deputies. The archive houses manuscripts, photographs, artifacts and equipment related to law enforcement in Alameda County from 1853 to the present. The collection includes a great number of original (and probably the only existing copies of) booking ledgers and jail rosters. There is also a special collection of records of the Chowchilla kidnapping case. Enthusiastic historians are always in attendance at the open house, which currently occurs on the third Thursday of the month from 10 a.m. to 2 p.m.
Here are directions to the archive, courtesy of Steve Minniear:
Exit off of Highway 580 at the Hacienda Exit and turn north, toward the Hacienda Crossings Shopping Center. Continue north on Hacienda to Dublin Blvd. Turn left and go west to the first major intersection where you will turn right onto Arnold Road (north). Take Arnold Road north over a mile until you are nearly past Santa Rita Jail. The road will veer right at the end and it will look like you are coming to a Santa Rita Jail entrance. Turn left at the first street you come to before you reach the gate. That road (Madigan) will turn right and you continue until you see a wooden guard tower painted white with green trim. Pull into the parking lot in front of the tower and park. The long warehouse type building in the parking lot is the archive.
For further information about the ACSO Archive, e-mail William "Bud" Harlan at mailto:email@example.com or call him at (925) 784-0525.