- eBookHitler's Suppressed and Still-Secret WeaponsHenry Stevens
- eBookHitler's Flying SaucersHenry Stevens
- eBookDark StarHenry Stevens
- eBookThomas Hariot, the Mathematician, the Philosopher and the ScholarHenry Stevens
- eBookThomas Hariot, the Mathematician, the Philosopher and the ScholarHenry Stevens
- eBookThomas Hariot, the Mathematician, the Philosopher and the ScholarHenry Stevens
- eBookThomas Hariot, the Mathematician, the Philosopher and the ScholarHenry Stevens