What about the small books Mr. Brian made with the pictures. Such as Redwall's Great Feast or a Winter's Tale.
They're part of the Redwall series, so they don't belong in the "Other Works" section. There are old topics in General Discussion on A Redwall Winter's Tale (http://redwallabbey.com/forum/index.php?topic=587.0) and The Great Redwall Feast (http://redwallabbey.com/forum/index.php?topic=586.0).