You might try ORVIS for your canvas covers. However, if you are going to spend money on a reel case, I would strongly consider the neoprene cases because of the protective attributes they provide. I love how I can also use the neoprene cases while the reel is mounted on the rod as well as when the reel is packed away for traveling. That type is available from just about any fly shop....Orvis, Feathercraft, The Fly Shop, Cabelas and can be purchased for usually $10 or less. The other alternative is to make a canvas pouch type yourself or post a wanted ad on the bulletin board here. Good luck in your search.
Gerri