- National Geographic picture atlas of our universeRoy A. Gallant, Margaret Sedeen
- Astrology: sense or nonsense?Roy A. Gallant
- Comets, Asteroids, and Meteorites (Kaleidoscope: Space)Roy A. Gallant
- Me and my bonesRoy A. Gallant
- The PlanetsRoy A. Gallant
- Before the sun diesRoy A. Gallant
- The Macmillan book of astronomyRoy A. Gallant
- Explorers of the atomRoy A. Gallant
- Earth's changing climateRoy A. Gallant
- Man's reach for the starsRoy A. Gallant
- The ABC's of ChemistryRoy A. Gallant
- AtmosphereRoy A. Gallant
- 101 questions and answers about the universeRoy A. Gallant
- The peopling of planet earthRoy A. Gallant
- Rainbows, mirages, and sundogsRoy A. Gallant
- Private lives of the starsRoy A. Gallant
- Elementary scienceJeanne Bendick, Roy A. Gallant
- GeysersRoy A. Gallant
- Ancient IndiansRoy A. Gallant
- The Life Stories of Stars (The Story of Science)Roy A. Gallant
- HistoryRoy A. Gallant
- Meteorite HunterRoy A. Gallant
- The Wonders of BiodiversityRoy A. Gallant
- Once around the galaxyRoy A. Gallant
