Why Hollywood continues to insist on ignoring a treasure-trove of "canon" material in favor of utter crap cobbled together by teams of screenwriters is beyond me.
http://en.wikipedia.org/wiki/Conan_the_Barbarian#Copyright_a...
May I also plug Distributed Proofreaders (http://www.pgdp.net/), which is a major source of primary source documents to Project Gutenberg. It is the power of the global community of internet citizens who digitize scanned documents that are difficult or impossible to OCR.
To anyone looking for inspiration and creativity and innovation; that is where you will find those stories that are obscure and hidden and have not been rehashed ad nauseam.
In fact: http://www.imdb.com/title/tt1705952/?ref_=fn_al_tt_1
http://www.imdb.com/title/tt0120855/?ref_=fn_al_tt_2
And with Holmes
http://www.imdb.com/title/tt1475582/?ref_=nv_sr_1
http://www.imdb.com/title/tt0988045/?ref_=nv_sr_2
http://www.imdb.com/title/tt1515091/?ref_=nv_sr_3
It's basically like they signed a $0, non-exclusive license to use the characters as they wish in a new work.
One of my friends was looking for something to read, had an old kindle but didn't really have any money to pay for anything. I pointed her towards these absolute classics which kept her occupied for months, and then she passed them down to her kids. She now has a kindle full of more books than she can possibly read, all for free. And her children are now benefiting from this as well. The last time we spoke, her son was enjoying romping across Mars in the "Barsoom" series, a series of books I grew up enjoying immensely. Even while looking for these I was stunned how many freaking awesome works are out there in the PD.
(most of these have ready-to-go kindle versions)
All of the Oz books (yes, there is more than 1 as I was delighted to find out) - http://www.gutenberg.org/ebooks/author/42
E.R. Burroughs, which gets you the Barsoom series, Tarzan and a handful of other fantastically great adventure reads http://www.gutenberg.org/ebooks/author/48
Even better, Verne, which gets you adventure, sci-fi and more - http://www.gutenberg.org/ebooks/author/60
A huge collection of Doyle works, Sherlock is a big piece, but he wrote tons of others. http://www.gutenberg.org/ebooks/author/69
A collection of old Science Fiction monthlies - http://www.gutenberg.org/ebooks/search/?query=astounding+sto...
The indomitable works by Dumas - http://www.gutenberg.org/ebooks/author/492
An entire classic bookshelf of Rudyard Kipling - http://www.gutenberg.org/ebooks/author/132
Jack London, who I grew up reading as a child and loving - http://www.gutenberg.org/ebooks/author/120
Stevenson - http://www.gutenberg.org/ebooks/author/35
And that's just the Gutenberg project. You can dive into several Library of Congress's worth of books, magazine and other literature at archive.org, a well so deep, it's easy to get lost and never find your way back to the same place again. And also happens to have the best on-line e-reader ever made. (Note: not all of these have fallen into the PD, but Archive.org treats them like it's from a world where they are in the PD, demonstrating the power of the idea).
https://archive.org/details/texts
but does have an almost 3,000 item Children's library https://archive.org/details/iacl, mostly of scans of original prints which are amazing on tablets.
The Harvard Classics https://archive.org/details/harvardclassics
And these astonishing collections
https://archive.org/details/comics
https://archive.org/details/imslp
https://archive.org/details/magazine_rack (which includes 196 issues of OMNI magazine https://archive.org/details/omni-magazine and 103 issues of Galaxy https://archive.org/details/galaxymagazine, 300 issues of Starlog https://archive.org/details/starlogmagazine)
And almost 1,500 scans of various Pulp Magazines https://archive.org/details/pulpmagazinearchive
Several libraries' worth of Computer Magazines (11,000 issues!) https://archive.org/details/computermagazines
And finally https://archive.org/details/sciencefiction