Sources

Field Guilde to North American Hauntings [ Blackman, W. Haden. The Field Guide to North American Hauntings. Crown Publishing: 1998. ] Not a region-specific haunting book but, it’s filled with interesting information.
Haunted Places [ Hauck, William Dennis. Haunted Places Penguin Books: 1996. ] This book is an index of haunted houses and other haunted places all over the country. It’s the national directory. It goes state by state, and county by county alphabetically. It’s a pretty thick book with brief little descriptions of the hauntings and a few pics. This book is the White Pages for haunted places. It’s a great book, it should be mandatory for anyone interested in seeking haunted places.
Ghosts of the Golden West [ Holzer, Hans. Ghosts of the Golden West. The Bobbs-Merril Company, inc: 1968. ] One of the many spooks books written by world renowned ghost hunter Hans Holzer. There’s an interesting chapter in this book on the Whaley House in which he investigates it with none other than Regis Philbin.
Hollywood Haunted [ Jacobson, Laurie and Wanamaker, Marc. Hollywood Haunted: A Ghostly Tour of Filmland. Angel City Press: 1994. ] A great book focused mainly on haunted sites all over Tinsel Town. It’s got a lot of sites not listed in the National Directory so it’s well worth the read.
Mouse Tales [ Koenig, David. Mouse Tales: A Behind-The-Ears Look at Disneyland. Bonaventure Press: 1995. ] Not in any way a ghost book but it does explain some of the hauntings that occur in the park. This book gives great insight into the wonderful corporation known as Disneyland. From rat infestations to death by People Mover, this books got it all.
Haunted Houses of California [ May, Antoinette. Haunted Houses of California. Wide World Publishing / Tetra: 1990. ] This book takes us through the usual haunted sites as well as some new ones like Garden Grove.
Ghoststalker\'s Guide to Haunted California [ Senate, Richard. Ghost Stalker’s Guide to Haunted California. Charon Press: 1998. ] From the same author of The Haunted Southland: Ghosts of Southern California, a more recent publication of the author’s experiences as a regional paranormal activity researcher.
The Haunted Southland [ Senate, Richard. The Haunted Southland: Ghosts of Southern California. Charon Press: 1994. ] This book has a lot of good info on haunted spots in Southern California. Richard Senate’s books are always a good read.