[HenryHuntington]

ER, LATL 3001 is at First and Chicago Sts. East First St. takes a jog to the north just outbound from the intersection, and LARy managed to squeeze a loop in there when it began using single-ended cars on the P Line.

You didn't ask, but LAMTA 1815 is operating on San Pedro St. on what appears to be a chartered fantrip: destination signs often were whimsically or "creatively" arranged on same. However, the Hollywood Blvd. line was abandoned in 1954, and LAMTA didn't take over until 1958. Also, the dual-gauge trackage (shared with the former LARy S Line) is a dead giveaway.

Thanks for posting these marvelous photos! Ditto to City Boy Doug and to Wig-Wag. Great stuff, fellas!