21 books in series

Pern

Pern is a 28-book series with 21 released primary works first released in 1968 with contributions by Anne McCaffrey, Karen Wynn Fonstad, and Todd McCaffrey.

The Ascent of Wonder: The Evolution of Hard SF
Dragonflight
Dragonquest
Dragonsong
Dragonsinger
The Smallest Dragonboy
The White Dragon
Dragondrums
Moreta
The Atlas of Pern
Nerilka's Story & The Coelura
The Girl Who Heard Dragons
Dragonsdawn
The Renegades of Pern
All the Weyrs of Pern
The Chronicles of Pern: First Fall
The Dolphins of Pern
The Masterharper of Pern
Legends
Dragon's Kin
Dragonsblood
Legends II
Dragonsblood
Dragon Harper
Dragonheart
Dragongirl
Dragon's Time
Cover 7

Sky Dragons