- E-bookEnchantress from the StarsSylvia Engdahl
- E-bookThe Future of Being Human and Other EssaysSylvia Engdahl
- E-bookChildren of the StarSylvia Engdahl
- E-bookThis Star Shall AbideSylvia Engdahl
- E-bookJourney Between WorldsSylvia Engdahl
- E-bookThe Planet-Girded SunsSylvia Engdahl
- E-bookHerald of the FlameSylvia Engdahl
- E-bookDefender of the FlameSylvia Engdahl
- E-bookPromise of the FlameSylvia Engdahl
- E-bookBeyond the Tomorrow MountainsSylvia Engdahl
- E-bookThe Doors of the UniverseSylvia Engdahl
- E-bookFrom This Green EarthSylvia Engdahl
- E-bookAnywhere, AnywhenSylvia Engdahl
- E-bookReflections on Enchantress from the Stars and Other EssaysSylvia Engdahl
- E-bookEnvoy of the FlameSylvia Engdahl
- E-bookThe Far Side of EvilSylvia Engdahl
- E-bookDementiaSylvia Engdahl
- E-bookSerie: The Rising FlameSylvia Engdahl
- E-bookSerie: Children of the StarSylvia Engdahl
- E-bookLou Gehrig's DiseaseSylvia Engdahl
- E-bookSerie: Flame TrilogySylvia Engdahl
- E-bookStewards of the FlameSylvia Engdahl
- E-bookThe Captain of EstelSylvia Engdahl