The annual Los Angeles Archives Bazaar is a one-day event that I HIGHLY recommend to LA History meetup members. It is one of the largest and most informative events that takes place each year that showcases organizations throughout LA County who are involved in many areas of the history of Los Angeles and the surrounding area. About 80 organizations (and some authors) are usually there with their own table, staffed with friendly and knowledgeable folks with literature about their events, activities and membership information, along with samples of photos, maps. etc.
If you can make it, don't miss this one!