I don't know how interesting this will be generally, but for those who love the Foundation series, and who have owned or read various editions of the books over the years, it may be a diversion of some mild interest: I have written up a pictorial feature on my website on the series publication. If you go to the site's 'Features' index here, you will see a link at the bottom to the new feature article. Enjoy.
Here is a taster, cut and pasted from the 'article':
Here is a taster, cut and pasted from the 'article':