- HörbuchThe Walker FiveMarie Johnston
- HörbuchKing's RansomMarie Johnston
- HörbuchKing's QueenMarie Johnston
- HörbuchKing's CrownMarie Johnston
- HörbuchKing's CountryMarie Johnston
- HörbuchFever ClaimMarie Johnston
- HörbuchKing's TreasureMarie Johnston
- HörbuchOil Kings CollectionMarie Johnston
- HörbuchMail Order FarmerMarie Johnston
- HörbuchConflict of InterestMarie Johnston
- HörbuchSerien: Oil KingsMarie Johnston
- HörbuchMustang SummerMarie Johnston
- HörbuchLong Hard FallMarie Johnston
- HörbuchGuilt RiddenMarie Johnston
- HörbuchSerien: The Walker FiveMarie Johnston