- AudiolibroThe Walker FiveMarie Johnston
- AudiolibroKing's RansomMarie Johnston
- AudiolibroKing's QueenMarie Johnston
- AudiolibroKing's CrownMarie Johnston
- AudiolibroKing's CountryMarie Johnston
- AudiolibroFever ClaimMarie Johnston
- AudiolibroKing's TreasureMarie Johnston
- AudiolibroOil Kings CollectionMarie Johnston
- AudiolibroMail Order FarmerMarie Johnston
- AudiolibroConflict of InterestMarie Johnston
- AudiolibroSerie: Oil KingsMarie Johnston
- AudiolibroMustang SummerMarie Johnston
- AudiolibroLong Hard FallMarie Johnston
- AudiolibroGuilt RiddenMarie Johnston
- AudiolibroSerie: The Walker FiveMarie Johnston