Lovecraft is easy, and free on the web.
http://www.dagonbytes.com/thelibrary/lovecraft/
Here's everything he ever wrote--feel free to print it out, it's legal.
Conan's a little harder, as it would, hypothetically, require you to go here
http://gutenberg.net.au/search.html and do a search for Robert Howard. Ofcourse, I can't recommend that, as I'm not 100% certain how legal it would be to do so within the United States, but I'm not sure it's *not* legal, either, but ignorance is not an excuse.