Each of these middle-grade science fiction book covers features an illustration of robots standing in front of a metal frame. The title is in the middle of the frame. Additional covers are possible for this series.
This science-fiction romance book cover features a couple in a passionate embrace at the top of the cover and a planet at the bottom of the couple. The woman has her eyes closed and her arm is around the man’s head. The man’s face is hidden behind the woman’s.