Charles Ulrich (1957) was a teacher in linguistics at ten universities in the United States and Canada. He was also active as a disc jockey on KSPC-FM. He published the Frostbite Falls Far-Flung Flier, a zine dedicated to Jay Ward's animated series.  Since 1994 he hosts the Frank Zappa fansites alt.fan.frank.zappa, zappateers.com and his own website The Planet of My Dreams.   In online communities he is somewhat regarded as a Zappa expert. 
In 2018 he published The Big Note. A Guide To The Recordings of Frank Zappa.