The earliest books on judo had extensive kyusho charts, which were simplified over decades, and finally disappeared completely, along with most atemi / striking instruction. This is from Yokoyama et al's Judo Kyohan 1913 chapter on atemi waza. This book is generally seen as the first judo book, as the Kodokan does not recognize the earlier ones as 'judo' books:
We cover some basic kyusho targets for punches and knuckle jabs in Nihon Jujutsu, with some simple, controlled demonstrations to convince people they exist and can be attacked effectively.
I address the topic a bit in judo instruction, mostly as an introduction to judo's technical development over time, and the removal of techniques like atemiwaza and kyusho from jujutsu to develop judo.