Pegasus
1 Pegasus and the Flame (2011)
aka The Flame of Olympus
2 The Fight for Olympus (2011)
aka Olympus at War
3 The New Olympians (2012)
4 The Origins of Olympus (2012)
5 Rise of the Titans (2015)
6 The End of Olympus (2016)
The Pegasus High-Flying Collection Books 1-4 (2017)
aka The Flame of Olympus
2 The Fight for Olympus (2011)
aka Olympus at War
3 The New Olympians (2012)
4 The Origins of Olympus (2012)
5 Rise of the Titans (2015)
6 The End of Olympus (2016)
The Pegasus High-Flying Collection Books 1-4 (2017)
Omnibus editions