I made this image using three DeviantArt stock images:

Elf 13 by Fuchsfee-Stock

Drummer Boy 4 by Polly-Stock

Ultra HD Planet Stock VII by The-Prototype92

"The New World of Aristocles" is an imaginary book... maybe some related story was actually told in another Reality. I imagine that Rycleu was the last robot on Earth and she traveled back in time to ancient Athens in order to bring into existence the world as we know it.
See my blog post about Imaginary Books.