I actually asked them per email to send me the copies. While I get your point, I personally don't hold any grudge at all, as long as people don't claim my pics as their own. Which they don't. It's the nature of the internet that such pics spread all over the world without anybody at the end of the chain knowing the source. It's just a silly little book and I doubt they'll be making any serious money on this.

I just added a translation of everything. I put it on reddit back then and it went viral, especially the meme somebody made out of it with the caption: "French aristocracy royalty in the 18th century" and they posted it on r/dankmemes (can't find the post without an account) plus someone else crossposted to r/historymemes. As usual, my r/aww post got 10k points, while both others got about 40k upvotes. Boredpanda asked me for an interview a few weeks thereafter: https://www.boredpanda.com/optical-illusion-cat-without-head-i-spin-bubbles/

Edit: Links added

Likely because "kaputt" translates to "kaput" in English, and depending on your region you may have heard something like "My computer went kaput" or "my car is kaput". Usually means the thing is non-functional; so broken, dead, etc.

Not dead just broken.

I also thought that, but then I remembered my Latin:

Kaput comes from the Latin for "head", caput. Knowing that but not knowing any German, my guess is because it looks like the cat's head is in the basket instead of on its neck :)

... two cats? Oh.