Biography notes the quality of his compositions and also shows him as teacher of other exceptional composers, organist, and conductor. From the Grove Concise Dictionary of Music entry at WQXR radio.

Program notes by Benjamin M. Korstvedt for the American Symphony Orchestra explore both his life and music.

Brief biographical sketch and Naxos discography.

Eric Schissel examines him as composer rather than teacher, looking for works demanding special commendation.