Question re WXKS/WRCA/WBOS towers

[Jim Hall]

I guess diplexes and triplexes for AM stations are getting fairly common,
but does any other triplex site have its three stations all licensed to
different cities the way WXKS(Newton)/WRCA(Watertown)/WUNR(Brookline) does?
When you look at the nighttime patterns for the three stations, basically
all three are aimed east-northeast towards Boston, yet all three are
licensed to other municipalities.