Most Popular Books
- Taming Liquid Hydrogen: The Centaur Upper Stage Rocket 1958-2002
- Lincoln Electric: A history
- Ideas Into Hardware: A History of the Rocket Engine Test Facility at the NASA Glenn Research Center
- Nature's Enigma: The Problem of the Polyp in the Letters of Bonnet, Trembley and Reaumur (Memoirs of the American Philosophical Society) (Memoirs of the American Philosophical Society)
- Realizing the Dream of Flight: Biographical Essays in Honor of the Centennial of Flight, 1903-2003
