Unmuzzled OX, started by poet Michael Andre, edited in New York City and Kingston, Ontario, is a quarterly of poetry, art and politics. Aided by artist Erika Rothenberg, the best-known issue was The Poets' Encyclopedia, the world's basic knowledge transformed by 225 poets, artists, musicians and novelists. The circulation of Unmuzzled OX peaked at 25,000 in the 80s with The Cantos (121-150) Ezra Pound. Regular contributors to Unmuzzled OX included Allen Ginsberg, Andy Warhol, John Cage, Daniel Berrigan, Eugene McCarthy, Margaret Atwood, Denise Levertov, Robert Peters, Robert Creeley and Gregory Corso. OX frequently features photographs of contributors by Gerard Malanga. Unmuzzled OX is located near the World Trade Center, and although the most recent issue, a translation by W. H. Auden of an opera by Carlo Goldoni appeared shortly before September 11, 2001, the Unmuzzled OX Foundation has a growing endowment, and future projects are expected.