Hilgard Ave in Westwood is the main thoroughfare that makes up the eastern border of the sprawling campus of UCLA. But back when this photo was taken, it was an unpaved country road that, going by this photo, was watered down by a mule-drawn carriage. UCLA moved to what was then called the Wolfskill Rancho in 1929. So I assume those buildings in the background are the first UCLA buildings (i.e. Royce Hall), which puts this photo at very late 20s/very early 30s. I’m not sure why Hilgard was in need of watering down but I’m guessing that with UCLA in the ‘hood, the city was anticipating that the streets would only get busier and busier. And they were right.
The watering down maybe preparation for paving.
Ah! Yes! That makes sense. Thanks, Stephen.
Hilgard was and (I think) remains sorority row.
Yes, I still is!