6 books in series

Early Earth

Early Earth is a 6-book series with 6 released primary works first released in 2013 with contributions by Isabel Greenberg.

Las cien noches de Hero
The One Hundred Nights of Hero: A Graphic Novel
La enciclopedia de la tierra temprana
The Encyclopedia of Early Earth
The One Hundred Nights of Hero
Encyklopedia Wczesnej Ziemi