High on my list of places to visit when I next travel to California is the University of California Botanical Garden at Berkeley. This undated photograph by John Davidson is clearly from the garden’s early days. It is an early image, perhaps, of the New World Desert garden, or that particular garden’s predecessor (almost all cacti are distributed in the “new world”, hence the guess). The details of the hills in the background might make it possible to take a modern-day photograph from the same point.
A photograph of the present-day New World Desert Garden is available on the mission and history page for the UC Botanical Garden at Berkeley.