Maybe one day a publisher will figure out how amazing Barron's jornals are and print an extensive collection of them... Maybe!?!
Untill then, there is Barron's Marat/Sade Journals published by Tundra in the early 90's. If you can find it, grab it, it's pretty rare. Barron's journals are amazing things. It's like looking straight into his head... and some times that can be pretty strange. That's the greatest thing about Barron's work, it's always a reflection of his uncompromising vision and the emotions that take him there. Many artists show you their masterpieces but Barron's never afraid to show you how he got there, which is always quite a trip.