The Iowa Rock and Roll Music Association posted the Silver Laughter biography online along with the rest of the 2014 inductees. It may be seen here. It takes readers through those early years all the way up to the breakup May 5 of 1979.
It should be noted that Jon, Ken, Mick and Kim played on the first album and Jon, Ken, Mick and Paul played on the second. Kim came back at the end (late 1978) and performed with Silver Laughter until the breakup.