King Features’ Flash Forward, with cartoonists creating Sunday pages featuring Flash Gordon, reminds me of another Sunday(-ish) page project of 50 years ago. In 1970 Union Carbide licensed Flash Gordon to promote their plastic product Bakelite. They hired Archie Goodwin and Al Williamson to produce a half dozen one-page adventures that were placed in various magazines. The ads began appearing in 1970 and went into 1971.
The first of the series announced and introduced the new ad series. Followed by five Sunday-like pages.