[DiapDealer]

Originally Posted by jgaiser

What I find strange is a number of his books are available either free or $0.99. How can that be if he has just died.

http://www.amazon.com/s/ref=sr_pg_1?...qid=1345063746

I think some of his stories/books were born in serial format in magazines like "Astounding Science Fiction" and "Analog" and has fallen out of copyright (in the U.S.). There's quite a bit of his stuff in MR's own library.