Hand drawn Shikishi boards from Yoshikazu Yasuhiko archived from the web mostly, whereas some (though a few) are scanned from my personal as well as others' collections. Some names have been edited out of the boards if addressed to someone in particular to conceal their identity. Many of these were sold at auction or given as gifts - there are several hundred out there, though these are a curated few.

Some come from as early as 1981, right when the first Gundam compilation film had debuted, whereas some are reproductions. A few that state "Not For Sale" are visitor gifts from various promotional events, museum shows, gift shop items. Some are just freebies from Gundam Ace or Kadokawa related materials.

Archive - https://archive.org/details/yoshikazu-yasuhiko-shikishi-illustrations
Twitter - https://twitter.com/retroanimechris
questions/ideas/suggestions - email - adoggoart@gmail.com

If you'd like to help me buy more texts to scan, I'd appreciate it! I am currently sourcing books that would be meaningful to the community at large. If you have suggestions, please contact me.:
https://ko-fi.com/retroanimechris