User blog comment:Mrcharlton/YJS books may not be canon/@comment-2107404-20110528205758/@comment-1771352-20110530015520

Perhaps YJS is just one of those things that is partialy canon (such as AWE video game). For example, perhaps Jack DID save Chevalle from the noose at Fort Charles and fight Villaineouva on Tortuga before DMC, but it heppened out of sequence in the game. Maybe it is the same case for these books as well; some parts may be with canon and others may not be.