Among the correspondents in this folder are: Paul E. Bierley; Arthur W. Lehman (6 letters); Lynn L. Sams (answering in detail Bridges' letter of March 2 concerning Frank Simon and other early brass players as well as the vicissitudes of self-publishing); Alvin Bernard (concerning record collecting); Stuart Dempster of the University of Washington School of Music (concerning some tapes he ordered, as well as discussing a book he was writing on new trombone techniques); Edward Bahr; Clifford Lillya. Also there Bridges' AARP card dated June, 1974 and a list titled "1974 ITA Workshop - Trombone recordings re-recorded on tape from personal collection owned by Glenn Bridges". The ITW began on June 4, 1974.