Replying to ReallyBookish: From my understanding of the introduction, the book combines accounts of three of his voyages that had been published, often serialized and one posthumously, in magazines. They have been arranged into some form of chronology and sort of blended into one narrative arc for this book from 1950. It's very possible the same pieces have been published in other forms, too.
The free ebook idea is a good one, though probably not for me - I don't enjoy reading digitally, perhaps because I work on the computer a lot and associate it more with that? Nevertheless, good to know if I get desperate :)
Thanks! I appreciate the info on "The Maine Woods." Like you, I do not enjoy reading digitally. I like analog books! However, these are unusual times so if you find that you really need something, it is always an option. Happy reading!