Litographs is a company that sells T-shirts, tote bags, and posters based on books in the public domain. Each print has an image related to the story, and the “pixels” of the image are formed by letters in the original text. If you look close enough, you can read them!
They don’t just include literary classics, but also a few science classics.
Here’s a close-up and zoomed-out view of Newton’s “Opticks“.
Can you recognize these other classic science books? Click each image for the answer – and to buy the product if you want to!