Firefly (Collected Editions)
Shown by first publication year; this may not be reading order.
Firefly: The Unification War Vol. 1
Firefly: The Unification War Vol. 2
Firefly Original Graphic Novel: The Sting
Firefly: New Sheriff in the 'Verse Vol. 1
Firefly: The Unification War
Firefly: The Unification War Vol. 3
Firefly: Watch How I Soar
Firefly: Blue Sun Rising Vol. 1
Firefly: Blue Sun Rising Vol. 2
Firefly: Return to Earth That Was Vol. 1
Firefly: Blue Sun Rising Deluxe Edition
Firefly: River Run