And during much of the Wolfman era, XERB (XEPRS) was Spanish language in the daytime; they had studios and management offices at different times above the El Capitan theater and in the "high rise" at Sunset and Vine, and nearly all clients were in LA and Orange counties.
Wasn't that "high rise" a dumpy little one or two story building? My dad worked at Jay Ward Productions, nearby - and I remember visiting him, and seeing XERB "studios" on the same (south) side of Sunset Blvd. IIRC, their sign was one of those cheap window-box light-up signs with removable letters, that retail businesses used to use.
We all know the Wolfman recorded his shows. I've heard that the tapes were driven down to Rosarita Beach, south of Tijuana, to play at the transmitter site. Is that true? I realize this was pre-satellite, but that seems like a lot of work.