Who’s Tadanori Yokoo (横尾忠則)?
Google helped dredge up this post from Anipages Daily:
But the fact is, the three shorts he contributed to the first and second festivals — Kiss Kiss Kiss and Anthology No. 1 in 1964 and Kachi Kachi Yama 堅々獄夫婦庭訓 in 1965 — are the only three he ever made. He is mainly known as a designer of psychedelic/collage-type posters, which have been shown in galleries everywhere including the Guggenheim and the Centre Pompidou.
Yokoo’s got an official site.
(via Paul Pope’s blog Pulphope)