April 18, 1958: Symphony no.1 by Easley Blackwood (24) is performed for the first time, in Symphony Hall, Boston.
January 5, 1961: Symphony no.2 by Easley Blackwood (27) is performed for the first time, in Cleveland.
November 21, 1964: Concerto for clarinet and orchestra by Easley Blackwood (31) is performed for the first time, in Cincinnati.
January 24, 1967: New works are performed for the first time, at the University of Chicago to mark the school’s 75th anniversary: Music for the Magic Theatre for 15 instrumentalists by George Rochberg (48), Inflexions for 14 players by Mario Davidovsky (32), and Un voyage de Cythère for soprano and ten instruments by Easley Blackwood (33).
July 28, 1968: Concerto for flute and strings by Easley Blackwood (35) is performed for the first time, at Dartmouth College, Hanover, New Hampshire.