The Codominium Headquarters - The CoDominium Universe (also known as the Empire of Man Universe) of Dr. Jerry Pournelle is a “future history” series of novels and short stories about an alliance between the United States and the Soviet Union.

Project Gutenberg - this site contains several Piper stories that are in the Public Domain.

The Jack Vance site - Jack Vance, though largely unknown, is one of the greatest writers of the 20th century. He is the author of over 60 books.