http://www.nybooks.com/
The following reviews of Brautigan's books appeared in the New York Review of Books:
Adams, Robert. "Brautigan Was Here." New York Review of Books 22 Apr. 1971: 24-26.
Rahv, Philip. "New American Fiction?." New York Review of Books 8 Apr. 1965: 8-10,42.
Both of these are excerpts taken from Contemporary Literary Criticism, Vol. 12. If you have a copy of the entire article and would be willing to share, please email me at birgit at cybernetic-meadows.net