Books
101 Fun Facts (and more) About the Planets: A Set of Eight 15 Minute Books, Educational Version
2014
The Mysterious Lines at Nazca: Educational Version
2013
Wer hat Angst vor der Dunkelheit?
2021
14 Fun Facts About the Moons of Mars
2020
14 Fun Facts About the Tiber River
2020
14 Fun Facts About Antarctica
2020