[en] Extraterrestrials MIT Press
[en] Latham's Landing Smashwords Edition
[en] How to Write an Exceptional Thesis or Dissertation · A Step-By-Step Guide From Proposal to Successful Defense Atlantic Publishing Group, Inc.
[en] Zen in the Art of Archery Smashwords Edition
[en] [Gutenberg 22994] • The Frontier in American History Dover Publications
[en] [Gutenberg 49012] • The postal power of Congress: A study in constitutional expansion Scholar's Choice
[en] [Gutenberg 50023] • The Economics of the Russian Village Palala Press
[en] [Gutenberg 50531] • On Sulphonfluoresceïn and Some of Its Derivatives Palala Press
[en] [Gutenberg 53719] • The Nootka Sound Controversy: A dissertation Beaufort Books