Dear RMCC,
A friend of mine posted this story that might be of interest to you:
DANE RUDHYAR
Composer's Dissonant Harmony in Practice, by Daniel Barbiero
"Once his mature style had been formed, it stayed fairly consistent. In the post-tonal, unsettled sounds of its harmonies, the late work Transmutation, a seven movement suite for piano composed in 1976, shows some similarities to the earlier work."
http://www.furious.com/perfect/danerudhyar3.html
best wishes,
Jason