The Wright & Callender Building at Hill & 4th Street. Further up 4th Street you can see the Fremont Hotel.
usc digital archive
below: Another view of the Fremont hotel at Olive and 4th Street, ca. 1920.
usc digital archive
above: I know this image has probably been posted before...but the Fremont Hotel is such a great building I couldn't resist.
You would be hard pressed to come up with a more "noirish" looking building in all of L.A.
below: I don't believe this angle of the Fremont Hotel has been posted before.
The Fremont is far right and the multi-storied Wright & Callender Building is at the left.
ebay...if I remember correctly.
below: This is a close-up of the small building behind the Wright & Callender Building at 4th and Hill Street.
If you look closely at the above photograph you can spot this building.
It's easy to imagine a down on his luck "gum-shoe" renting a room in this building partially hidden by the much larger Wright-Callender Building.