found: Duffy, J. Symphony no. 1, 1991, c1989:t.p. (John Duffy)
found: Anderson, E.R. Contemporary Amer. composers, 2nd ed.(Duffy, John; b. 6-23-28, New York)
found: John Duffy WWW site, July 14, 2015(John Duffy; conductor, composer)
found: New York times WWW site, viewed Dec. 29, 2015(in obituary published Dec. 28: John Duffy; John Charles Patrick Duffy; b. June 23, 1926, Manhattan; grew up in the Woodlawn neighborhood of the Bronx; d. Dec. 22, Norfolk, Va., aged 89; founder and longtime director of Meet the Composer, an organization created to promote contemporary music and place composers in residence with American orchestras)
