Book 4

The Airship War

by Brent Nichols

Published 14 May 2013

Book 5

Assault on Villamar

by Brent Nichols

Published 23 October 2013

Book 6

Airship Down

by Brent Nichols

Published 25 January 2014

The Airship War Omnibus

by Brent Nichols

Published 26 January 2014