While working on a bigger post about the timeline of Octopus behavioral research, I came upon this book – “The Octopus; the ‘Devil-Fish’ of Fiction and of Fact”. Read it here on the Internet Archive – it’s available in several formats.
This piece is a colorful account by one Henry Lee of his experience with Octopuses (more properly, about some specific octopuses “with whom [he has] been on friendly terms”.) He has great, livid descriptions of octopus behavior in here, such as his account of feeding an octopus a crab against a pane of glass, so that the process could be observed:
claw, was grasped all over by suckers — enfolded in them — stretched
All in all, it’s an entertaining and informative (although scientifically questionable) read, and is one of the earliest description of octopus behavior that I have yet found free full text for – Aristotle’s descriptions in “The History of Animals” notwithstanding, a translation of which is available at the link, if you’re interested.