The images are in sequence with the police report here. The 6th picture of the old white building is next door and where they hid in the corner.
The address is 13355 Hawthorne Boulevard, Hawthorne and the side street is 134th. Image #4 of the alley with the block wall and home is described in the police report. It says this "Officer McInernv at this time took cover behind a 3' block wall of the residence at 4429 "A" W. 134 St. and fired six shots from his service revolver into the direct front of the van" I read in one of the reports that when the officer ran out of bullets, the home owner came out and gave him a .38 to use.
Western Surplus is still in business elsewhere on Hawthorne Blvd. in Hawthorne.