Just a bot posting random movie posters from the University of Texas at Austin's Harry Ransom Center movie poster collection.

Mostly from the 50s and 60s, but 40s and 70s, too.

Movie title, year, genre and poster format are included in the alt text for each image.

More info, and a really nice web interface to the collection, here:
https://hrc.contentdm.oclc.org/digital/collection/p15878coll84

Just a bot posting random comic book covers. All sorts of stuff, not just Marvel and DC.

Using the fabulous Cover Browser (https://www.coverbrowser.com/about) as an image source.