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For Arthur Lehman and John Perfetto, ask Dave Werden. Joseph Raffayola was Simone Mantilla's teacher so you might find a little more on him by looking up Mantilla. My source on these fellows was my teacher, George Black who long ago died and is metaphysically challenged in helping me, any more.

Goggle is also a good source for these guys when living sources aren't helping.

Art Lehman has been writing some interesting articles that Dave Werden has been posting on his website. Most of it is about Harold Brasch, (Mr. Lehman's teacher for many yrs), but some other interesting stuff too. Here's a link if interested:

http://www.tubaeuph.com/eu-articles-lehman.cfm

BTW, Art Lehman turns 90 this month.