For the back I had a piece of 8/4 Maple which was re-sawed then tongue and grooved so that it will float in the Alder frame to compensate for the change in humidity. Since this chest will be in the shop that can become a problem when the monsoons arrive.
On the sides of the chest Maple was used as well but this time I left the panel in one piece. In retrospect, I like the looks of the back and almost wished I'd treated the sides the same. In this view you can see how the drawers were treated and also the finish that has that wonderful sheen. Almost a shame that it'll spend it's life in a sawdust laden shop!
All in all, I'm really pleased with how this chest turned out. It'll fulfill the functions I needed and it kept me off the couch for quite a while -- that's always a good thing.