- E-bookThe Caves of FearHarold L. (Harold Leland) Goodwin
- E-bookRip Foster in Ride the Gray PlanetHarold L. (Harold Leland) Goodwin
- E-bookThe Egyptian Cat MysteryHarold L. (Harold Leland) Goodwin
- E-bookThe Egyptian Cat MysteryHarold L. (Harold Leland) Goodwin
- E-bookThe Electronic Mind ReaderHarold L. (Harold Leland) Goodwin
- E-bookThe Blue Ghost MysteryHarold L. (Harold Leland) Goodwin
- E-bookRip Foster Rides the Gray PlanetHarold L. (Harold Leland) Goodwin
- E-bookThe Golden SkullHarold L. (Harold Leland) Goodwin
- E-bookThe Flying StingareeHarold L. (Harold Leland) Goodwin
- E-bookThe Flying StingareeHarold L. (Harold Leland) Goodwin
- E-bookThe Flaming MountainHarold L. (Harold Leland) Goodwin
- E-bookThe Pirates of ShanHarold L. (Harold Leland) Goodwin
- E-bookThe Scarlet Lake MysteryHarold L. (Harold Leland) Goodwin
- E-bookThe Wailing OctopusHarold L. (Harold Leland) Goodwin
- E-bookThe Pirates of ShanHarold L. (Harold Leland) Goodwin
- E-bookRip Foster Rides the Gray PlanetHarold L. (Harold Leland) Goodwin
- E-bookSmugglers' ReefHarold L. (Harold Leland) Goodwin