Here’s 323 5th St. via Google’s Street View.

Seven photos by C.C. Pierce showing Fire Department equipment have been listed on EBay. Pierce was a prolific photographer who chronicled the early days of Los Angeles. Many of his photographs are at the Huntington, and USC also has a sizeable collection.  The above picture is No. 7458. Bidding on the photo starts at $2.50.

Also for sale: Volunteer Firefighters Parade, July 4, 1871, with the first fire engine.
Fire at Broadway and 3rd St., 1913 (No. 7635). (Notation on back: Bryce Building Fire, Sept. 16, 1911
Chicago Wall Paper Co. Fire)
Fire at Broadway and 3rd St. (No. 7636)
Engine Co. 5. Noted on back: This group of horses were called the “White Angels.” 1900: 4th and Towne at that time city had 11 fire engines companies, 5 hose companies, 2 chemical engines, Thos. Strohm was fire chief.
Firehouse (No. 1587) Old fire engine house 9th and Main now occupied by the Rives-Strong Building. Published in The Times, July 17, 1938.
Firehouse on West Adams (no number).

One of the most interesting things about Pierce’s photos is his captions.

7458 1900
Fifth St. in 1906
Normal School removed in Nov-Dec 1922, Opened Aug 1882.

Philharmonic Auditorium built in 1906
Cal [California] Club built in 1905 removed in 1930
Park Hotel removed in now site of Pershing Square  Blvd. (1924?)
Next building being torn down to make way for the F R Stron bldg (Hotel Paxton 323 W 5th)

Left side A L Bath Bldg 1898.