Last week I was almost ready to upload this entry to the Anime Companion Supplement but could not find some crucial information.
I searched my books, then the databases I have access to through work, I searched those at San Francisco Public Library and then I turned to Google Books. There I found an ad in Life magazine for 1970 for a book. Thank God for used book dealers, in less than a week I had a copy in my hands.
Now complete I give an entry on:
Nihon bankoku hakuran-kai (Japan World Exposition aka Expo '70) 日本万国博覧会
Damn the future looked cool back then!