15 books • 3 series
Book #1: G.I. JOE: The IDW Collection Volume 1
Book #2: G.I. JOE: The IDW Collection Volume 2
Book #3: G.I. JOE: The IDW Collection Volume 3
Book #4: G.I. JOE: The IDW Collection Volume 4
Book #1: G.I. JOE: Origins Omnibus Volume 1
Book #2: G.I. JOE: Origins Omnibus Volume 2