All frequencies 360 meters (time sharing) unless noted.

Earl C Anthony, KFI
Beacon Light CO., KNR
Bible Institute of LA, KJS
Braun Corp., KXS
Bullock's, KNN
City Dye Works and Laundry, KUS
Irving S Cooper, KZI
Electric Lighting Supply Co., KNX
Kieruiff & Co, C. R., KHJ
Arno A Kluge, KQL
Los Angeles Examiner, KWH
Leo J Meyberg Co., KYJ (360, 485)
Pomona Fixture & Wiring CO., KGF
Radio Supply Co., KNV
Standard Radio Co., KJC
Western Electric Radio Co., KOG

Some others of possible interest:
Westinghouse Electric Co., KDKA
Warner Brothers, KLS (Oakland CA)

I hope this was accurately typed, used my cellphone.

Enjoy.

73 de Joe, KJ8O