Audio materials in this series include recordings of poetry readings at Duff's, a local St. Louis restaurant and Poetry Beat, a radio program featuring poetry.

These materials are part of a larger overarching collection, the River Styx Archive, 1973-2001.

The finding aid can be found here: http://archon.wulib.wustl.edu/index.php?p=collections/controlcard&id=882&q=river+styx

The River Styx Archive includes correspondence, biographies, ephemera, and miscellany material concerning individual River Styx contributors or Duff's/P.M. Series readers and performers; editorial, office-related and administrative, Board of Directors, University of Missouri - St. Louis, and financial crisis correspondence; material towards specific issues; material from Duff's Reading Series, P.M. Series, Poetry Beat radio program, and other River Styx events; business files; River Styx executive committee and Board of Directors information; and various ephemera.