Aye me Buckos!
Jest in kase ye wished to read the orijinal missive of Master Stevenson
here she be:
https://www.gutenberg.org/files/120/120-h/120-h.htm#link2H_PART1
My interest in doing is that Movies often depart WILDLY from the book.
For instance, Disney’s (1950) version – excellent as it is –
was modified to Disney audiences and the sensibilities of the day.
So it’s of interest to me which of the many film versions
is most accurate to the book?

In any event:

The Project Gutenberg EBook of Treasure Island, by Robert Louis Stevenson

This eBook is for the use of anyone anywhere in the United States and most other parts of the world at no cost and with almost no restrictions whatsoever.  You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at:
www.gutenberg.org.  If you are not located in the United States, you'll have to check the laws of the country where you are located before using this ebook.

Title: Treasure Island

Author: Robert Louis Stevenson

Illustrator: Louis Rhead

Release Date: March 13, 1994 [EBook #120]
[Most recently updated: October 28, 2020]

Language: English

Character set encoding: UTF-8

*** START OF THIS PROJECT GUTENBERG EBOOK TREASURE ISLAND ***

Produced by Judy Boss, John Hamm, Arthur DiBianca and David Widger

I’m posting a few of the original book illustrations by Louis Rhead:
And gems they are.

And there she be.