Collegiate Institute, Los Angeles, California, ca. 1920, a hand-colored glass lantern slide, via Arthur Peck Photograph Collection, OSU Special Collections & Archives Commons on flickr.
Arthur Peck was a Professor of Landscape Architecture at the Oregon Agricultural College* from 1908 to 1948. This picture was part of his teaching library of 24 boxes of glass lantern slides — now in OSU’s archives.
I like the hose left out on the grass in this otherwise very neat picture. It would illustrate to a class the major problem in maintaining a lawn in Southern California.
Unfortunately, I can’t find anything about a “Collegiate Institute” in Los Angeles.
*The college later became Oregon State University (OSU).