"Steelhead Dreams" by Matt Supinski has 13 color plates of GL flies, with recipes. Also "Steelhead Guide; Fly Fishing Techniques and Strategies for Lake Erie Steelhead" by John Nagy has extensive fly pics and recipes.
Not specific to Great Lakes, but a good one with color photos, recipes and how-to's is: Steelhead Fly Tying Guide by H. Kent Helvie. Lastly (ok, probly not, but its worth a try), I'm big on knowing the history, the roots, if you will, of flies of any stripe. Providing a good foundation for that kind of knowledge related to Steelhead flies is Trey Coombs big book, "Steelhead Fly Fishing." I had the privilege of holding all the original flies on their plates for that book in my hands a time or two. That was inspirational.