Over 20 letters, postcards, and typed poems from Beat poet and playwright Michael McClure to Fred Martin, his editor at New Directions, together with carbons of Martin's outgoing correspondence. The collection also includes a small amount of printed matter, some of which is annotated or inscribed by McClure.

The River City Reunion was a large-scale cultural event held in Lawrence, Kansas in September 1987 that celebrated the town's contributions to the arts in the Midwest and a gathering of cross-generational counter-culture writers, musicians, and performers. This collection predominately contains audiovisual materials covering the event and a number of release forms associated with the audiovisual material.