No really! Not spam at all!
I just went looking for some of HPL's contemporaries, but I found their works scattered all over, so seeing as we're approaching the end HPL's oeuvre in the podcast, I thought I'd collect the links I've found here, for those who want to read more.
I've started with manybooks.net, as I've found their formatting to be better than Gutenberg's, but both of them seem to lacking some authors or others, though my search is hardly exhaustive. So, on with the links:
Robert W. Chambers:http://www.gutenberg.org/ebooks/search.html/?default_prefix=author_id&query=1618
Robert E. Howard:http://www.manybooks.net/authors/howardr.html
An interesting article on REH's copyrights:http://www.robert-e-howard.org/AnotherThought4rerevised.html
Clark Ashton Smith:http://www.eldritchdark.com/writings/short-stories/
These stories are on web pages, as opposed to epub files, though they'd be easy enough to convert with Calibre. There's also poetry and non fiction writing to be had there. But nothing on Manybooks or Gutenberg. I may give them a run through and see about bundling them together as an epub, depending on copyrights.
Bram Stoker's Lair of the White Wormhttp://www.manybooks.net/titles/stokerbretext98lrwhw10.html
And here are Dunsany, Machen, and Poe:http://www.manybooks.net/authors/dunsany.htmlhttp://www.manybooks.net/authors/machenar.htmlhttp://www.manybooks.net/authors/poeedgar.html
Just for completeness' sake.
EDIT: corrected some of the links