And the Hippos Were Boiled in their Tanks (2008), by William S. Burroughs and Jack Kerouac

From a Godspy review:

A legendary manuscript co-written by Beat Masters, Jack Kerouac and William S. Burroughs, has finally come to light as And the Hippos Were Boiled in Their Tanks. Written when both were unknown and unpublished, leading hardscrabble lives in wartime New York, the real-life story centers on the doomed relationship between Lucien Carr and David Kammerer, mutual friends of the would-be Beats. Though the names and some facts are changed in the book, Hippos is for the most part a deadpan account of the relationship (which ended with Carr stabbing Kammerer with a Boy Scout knife and dumping his body in the Hudson) from the perspectives of Kerouac and Burroughs, who alternate chapters as “Mike Ryko” and “Will Dennison,” respectively.

Read the rest on Godspy.