My great aunt wrote some of the original scholarship on this type of marginalia: https://www.goodreads.com/book/show/5064937-images-in-the-margins-of-gothic-man

My great aunt wrote some of the original scholarship on this type of marginalia: https://www.goodreads.com/book/show/5064937-images-in-the-margins-of-gothic-manuscripts https://www.goodreads.com/book/show/5064937-images-in-the-ma... It's a shame that she is not mentioned. In answer to one of the other posters wondering about Monty Python, the answer is yes. She told me that Eric Idle or possibly Terry Jones (?) at one point had a fascination with these illustrations and I believe they corresponded. In any case, it wasn't just the rabbit sketch - some of the interstitial animations between skits are taken directly from tropes in these drawings.