My husband just recently finished reading A Redwall's Winter Tale, by Brian, Jacques to our 6 year old son, and our 4 year old jumped in on it too last night.  They are just getting ready to get into, The Great Redwall Feast.  These are the only two picture books available.  The rest of the books come in paperback form.  When I went the bookstore yesterday, I was surprised to see that the rest of the series was not located in childrens' section.  But, oh my...what a selection my husband will have to read to the kids!  http://www.lookingglassreview.com/html/the_tales_from_redwall.html