Uitgevers Pencil Rough Productions

Cover for Bill Holbrook · Safe Havens Treasury: the Daycare Years (Paperback Book) (2015)

Safe Havens Treasury: the Daycar... (2015)

Cover for Bill Holbrook · Dave's Gold (Paperback Book) (2020)

Dave's Gold (2020)

Cover for Bill Holbrook · Revenge Served Wild (Paperback Book) (2021)

Revenge Served Wild (2021)

Cover for Bill Holbrook · Masked Romance (Book) (2022)

Masked Romance (2022)

Cover for Bill Holbrook · Earth Return (Book) (2024)

Earth Return (2024)