OK, found a news piece that San Mateo CA bought at least 2 EOWS 1212's in 1987:
https://www.newspapers.com/article/time ... 125059794/
The news article does not say where the other 4 were to be located. I can't find the one by the Library. Confirmed one of them:
https://goo.gl/maps/jNB78evizwXkcprs9