Modern American Poetry sponsors a Robert Duncan web site at http://www.english.uiuc.edu/maps/poets/a_f/duncan/duncan.htm (last accessed April 2001).

Kent State University lists a bibliography of Duncan's work in its special collection at http://www.library.kent.edu/speccoll/literature/ poetry/duncan.html (last accessed April 2001).

The Theosophical University Press has a glossary of theosophical terms available online at http://www.theosociety.org/pasadena/etgloss/ mi-mo.htm (last accessed April 2001).

The American Academy of Poets offers a 1969 audio cassette of Duncan reading from The Opening of the Field, Roots and Branches, and Bending the Bow.