RAH's complete works will never appear online. The copyrights are held by too many people and agencies, some of which are defunct and some of which refuse to relinquish the rights.
E.E. "Doc" Smith's work is under similar constraints.
Both mens' complete works can be found in the LA Public Library.
You think everything online is legal and always subject to copyright laws?
I'll bet that despite the measures in place, Revenge of the Sith will be available for download within 12 hours of the first theatrical release.
Again though, I am only playing Devil's Advocate.