- Enchantress from the StarsSylvia Engdahl
- This star shall abideSylvia Engdahl
- The far side of evilSylvia Engdahl
- Journey Between WorldsSylvia Engdahl
- Dissociative disordersSylvia Engdahl
- Online Social NetworkingSylvia Engdahl
- Anywhere, AnywhenSylvia Engdahl
- The atomic bombings of Hiroshima and NagasakiSylvia Engdahl
- Chronic fatigue syndromeSylvia Engdahl
- The doors of the universeSylvia Engdahl
- Alternative therapiesSylvia Engdahl
- Universe aheadSylvia Engdahl, Rick Roberson et al.
- Artificial Intelligence (Contemporary Issues Companion)Sylvia Engdahl
- The women's liberation movementSylvia Engdahl
- FibromyalgiaSylvia Engdahl
- ProhibitionSylvia Engdahl
- The Planet-Girded SunsSylvia Engdahl
- Espionage and intelligenceSylvia Engdahl
