I was looking through the Daily News archive at UCLA, and found the following. It is captioned "Veterans waiting in line at Bank of America to cash bonds during G.I. bond "gold rush" in Los Angeles, Calif., 1947" and was taken on September 3. Which BofA it was is not mentioned.
UCLA Special Collections
I was almost going to ask
HossC if it looked like any of the Julius Shulman bank photos he has been posting.
But I saw one clue, which was apparently the street number for the branch: "100." The 1942 CD and 1956 SD did not have any BofA branches with that street number. Given there were African-American customers, I looked at phone directories for inner-ring suburban cities and in the 1948 directory found a BofA branch in Inglewood at 100 N. Market.
Edit:
GW and
HossC point out below that a better match is the 901 S Main branch which would seem to also have a 100 W 9th street address.
This bank run made the front page of the LA Times:
LAT 9-3-47