5 books in series

Earth Chronicles

Earth Chronicles is a 9-book series with 5 released primary works first released in 1976 with contributions by Zecharia Sitchin.

The 12th Planet
The Stairway to Heaven
The Wars of Gods and Men
Genesis Revisited
When Time Began
El Libro Perdido de Enki
The End of Days
The King Who Refused to Die
The Anunnaki Chronicles