Henry Dixon Cowell (1897-1965) - Listing of miscellaneous songs and cycles at recmusic.org, some with texts. - http://www.recmusic.org/lieder/c/cowell.html
Cowell, Henry Dixon - Musical biography showing both his self-teaching and formal instruction and noting his large, complex, innovative, and often unconventional output from the Grove Concise Dictionary of Music entry at WQXR radio. - http://www.wqxr.com/cgi-bin/iowa/cla/learning/grove.html?record=2227
Stockhausen's New Morphology of Musical Time - A comparison of Cowell and Stockhausen, from "Karlheinz Stockhausen's New Morphology of Musical Time" by Christopher K. Koenigsberg. - http://www.music.princeton.edu/~ckk/smmt/cowell.comparison.6.html
Henry Cowell as theorist and Critic - Excerpts of article from The Whole World of Music: A Henry Cowell Symposium, David Nicholls, editor (Harwood Academic Press, 1997) - http://home.earthlink.net/~kgann/Cowell.html