Woodsy,
Even though the Dan Dare - Pilot of the Future Pop-Up Book from 1953 has been well covered on the Blog before, this piece of information the seller of my example forwarded to me might be of interest.
Here's a slightly edited version of his written account from 2021 about a close relative who worked on the book:
"Roy Jones Blatchford was a photo lithographer at Purnell's the printers in Paulton, Somerset. He started work at Purnell's in 1948 aged 20 as an apprentice photo lithographer and worked his way up to becoming a chief lithographer. He designed the illustrations for printing and the pop-up designs. My understanding is he worked out how the cardboard would need to be printed, then folded and cut and helped the printers set up the print run. This was a very rare skill as it meant he had to think in 3 dimensions, but arrange printing and cutting in 2 dimensions.
When the printers did a new print run, a copy of the books printed were kept back and safely stored as examples. When Mr. Blatchford was made redundant, he saved the books from disposal as the print works soon closed down. His favourite work was to design the layout of pop-up books."
Photos accompanied here with another Dan Dare book with the same provenance, Dan Dare's Space Annual 1963.
Arto
Helsinki Base