There they founded Cherry Valley Editions to print a series of books by William S. Burroughs, Herbert Huncke, Robert Peters, Dick McBride, and others, including Plymell's own work, that are now out of print and rare.
Some of his distinguished colleagues were novelist Oakley Hall, Victorian scholar and Poet Robert Peters, and Literary Critic Hillis Miller.
He performed at Barnsdall Art Park in Los Angeles, at Carpet Company Theatre in Los Angeles, Fine Art Theatre at UCI, Provincetown’s Summer Theatre, St. Matthews Church near Broadway, New York and many college campus venues.
Robert Louis Stevenson | Robert De Niro | Robert E. Lee | Robert Mugabe | Robert Redford | Robert Burns | Robert Bosch GmbH | Robert | Robert A. Heinlein | Robert Schumann | Robert Browning | Robert Rauschenberg | Robert Plant | Robert Altman | Robert Mitchum | Robert Frost | Robert Southey | Robert F. Kennedy | Robert Maxwell | Robert Graves | Robert E. Howard | Robert Fripp | Robert Fisk | Robert Rodriguez | Robert Motherwell | Robert Lowell | Robert Johnson | Robert Duvall | Robert Boyle | Robert Walpole |
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.