From David Thompson comes this tip on LARy cars seen in a vintage movie on YouTube:
The 1932 Barbara Stanwyck movie "Shopworn" has a couple brief scenes of LA Railway cars. At about minute 9:00 & 11:00 a "V" line car can be seen outside the door of Fred's Campus Inn. Looks like Monroe Ave. At about minute 40:00, a "3" line sowbelly can be seen at Larchmont & Melrose (I think).
Thank you, David!