Star Trek: Ring Around the Sky (Book #37 of Star Trek: Starfleet Corps of Engineers) Allyn Gibson eBook £2.99
Star Trek: Corps of Engineers: Grand Designs (Part of Star Trek: Starfleet Corps of Engineers) Allyn Gibson, Kevin Killiany, and Kevin Dilmore Dayton Ward, David Mack, Dave Galanter, and Paul Kupperberg eBook £2.99
