I have found a new time sink at the Online Archive of California, where this photo of undeveloped Walavista Avenue, from 1916, is posted as part of this collection.
The camera is on top of Warfield ridge, west of Lakeshore, just uphill from Fairbanks Avenue. The wooded gulch at back left is the charming little valley that Portal Avenue runs up, right at the Piedmont line. The Alameda Quarry, where Davies Tennis Stadium now sits, was just to its left, discreetly out of this developer’s portfolio photo.
Here’s roughly the same view in 1925. The view from there is still nice, but much more obstructed today.
The street on the left is Arimo Avenue, running up the smallest of the ridges south of Lakeshore, and the ridge on the right is populated today by Balfour and Calmar avenues. It is fascinating to see this topography in its original form.