This turned up the other day and I was fascinated by it. In the first place, it isn’t dated and it’s not easy to come up with a good date. Zoom in for a closer look:
The best I’ve been able to do so far is somewhere between 1986, when the Ley Student Center was finished, and 1994, when the Bonner Lab was demolished. (Note that although it isn’t in the alphabetical listing, the Ley Center is there on the map.)
The thing that made my jaw drop, though, was number 17. The decision to identify the Flammable Chemicals Storage building seems like a dubious one to me.
Bonus: It looks like we lost another tree last week in addition to the Pershing Pecan, this one unlamented but equally dead.