The Lincoln Affair - Michael Gerhardt - Bog

Six cousins find abandoned train caboose in the woods and decide to make it their club house. They quickly learn that it has magic powers and it can confer one on each of them. All goes well until a witch arrives and claims the caboose belongs to her, and she wants it back. The cousins refuse and soon discover that the struggle that follows could cost them much more than control of the magic caboose.