At the time the Schlicker organ was put in at First Cong. L.A., I had season tickets for the concert series for a couple of years. That was in about 1969 to early 70's. At the time the console was a four-manual with tilting tablet stop controls. I can remember Virgil Fox, Alexander Schreiner, Flor Pieters, among others.
In effect, there are really two organs, plus what they have added since. The original chancel organ is a Skinner of about 1932, but it has been added to. The Schlicker is in the west balcony, which had previously been exactly that - a balcony.
I no longer live in the L.A. area, so haven't been to the church in some years. But I gather they have removed the seats from the crossing balconies and added more pipework in those.
The church itself is cruciform and is something of an architectural masterpiece in itself. It is supposed to be modeled after a British cathedral.
You can get information at
www.fccla.org or by putting the name of the church into Flickr, and probably other photo sites.
The Crystal Cathedral is somewhat the same situation - two organs, front and back. There are some suspended reed stops up there in the air, too. Both churches have two consoles, which supposedly can play any part of the organ(s).
The L. A. area has quite a number of fairly large organs, so there is quite a bit to listen to. As for California in total, I'm a native and life-longer, but I can't claim to know about all the organs there are. With the number of large cities, it figures there must be a lot of them, but as all of you know, organs can have all sorts of pedigrees, so what is good or indifferent might take some study!!