Uitgevers Outer Planet Media

Cover for Gerald M Kilby · Colony One Mars (Paperback Book) [Print edition] (2018)

Colony One Mars (2018)

Cover for Gerald M Kilby · Surface Tension: Colony Five Mars - Colony Mars (Paperback Book) (2020)

Surface Tension: Colony Five Mar... (2020)

Cover for Gerald M Kilby · Plains of Utopia: Colony Six Mars - Colony Mars (Paperback Book) (2021)

Plains of Utopia: Colony Six Mar... (2021)