Hats off to
Ed Workman, Looking4OldLA, Killeye, and
fhammon on the Lamar Street 950. I am convinced you all are right because of the Sanborn maps below. I've made notes on both the maps and photos. The buildings line up well.
South end of line (cafes):
Corresponding Sanborn map:
LAPL
This shows the original location of the San Antonio Winery at 737 Lamar (champagne of course!). On the east side of the street is a bungalow court (762, dark blue) and, circled in purple, a couple of old gasoline pumps (?). The front grill of the light-colored car in front of Thelma's looks like a prehistoric fish. Stuff of nightmares.
950 seen a block north of the above:
...and the Sanborn map:
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The Sanborn map does not show the track division (for passing?) but it does show the one floor porch (green) on the apartment at 649 (red).
The city directories do not reveal who cafe-mistresses Thelma or Amelia were. Amelia's was owned by Richard and Frances Lasky. Thelma's was run by Edward and Barbara Schneider.
The Santa Fe wines, prominently advertised on the south side of the Celaya Grocery, were products of the Santa Fe Vintage Company, according to a 1955 trade paper, "the largest and by far the most important winery in the Los Angeles district and located in downtown Los Angeles." - see
http://www.oldandsold.com/articles02/losangeles2.shtml.
Something bothered me about the trolley pictures: The sign (maroon circle) present on one is absent on the other. The Lamar street track just ends without any turnaround. The trolley pole suggests the Thelma's picture was taken just as 950 started heading back north towards Main Street. The Celaya picture shows the car still headed south, so I guess it was taken first. Apparently someone had to get out at the end of the line and manually switch the head sign to the other end of the car?
Celaya is a city in Guanajuato, Mexico. The CDs indicate the grocery was run by Ezequiel Ramos and persisted at least until 1956:
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