Hi Tom, great to find another fan of John Clellon Holmes (a writer considered part of the Beat Generation yet apart from it in numerous respects).
Best bet is to buy Holmes' collected essays, which include the one I mentioned, arranged in a three volume set issued by The University of Arkansas Press, Fayetteville.
The volumes were issued in 1988 shortly after Holmes' untimely death.
One volume is devoted to biographical essays (including his landmark essays on Jack Kerouac and Allen Ginsberg); a second is his cultural essays; and the third collects his travel writing.
He was one of America's finest essayists, and like many, he had a good appreciation of good wine, beer and liquor..