The Chad Valley Picture Show was a toy slide projector sold in the '70s.
Naturally, one of the releases featured Planet of the Apes. From
the Planet of the Apes Wiki:
In 1975, Chad Valley, a UK toy company, produced 32 short film-based
comic strips containing illustrated scenes from various TV series
episodes, packaged as part of the slideshow projector playset named
Chad Valley Picture Show: Planet of the Apes Sliderama Projector*.
These strips are extremely rare and difficult to come by, and contain many
continuity errors.
*Very similar to the many Give-a-Show projector sets of the 1970s.
The Chad Valley Picture Show is not featured here because there's a page
devoted to it on Kassidy Rae's Apes
TV site.
Angelo Regalado sent in this video he created a few years ago featuring the images
from the Chad Valley Picture Show.
Greg Champy has a similar video he created that can be found on
YouTube