By "Classic", if you mean Catskill dry flies, I'd suggest you consider:
Light Hendrickson, Quill Gordon, Pink Lady, Dun Variant, Cream Variant, Gray Fox Variant, Red Quill, March Brown, Brown Bivisible, White Wulff, 2 Feather Fly, Conover, Rat Faced MacDougal, Ginger Quill, Dette Coffin Fly, Dark Cahill.
All these flies date back to the 'Classic' period (pre 1950). Hope this list helps.
[This message has been edited by tyeflies (edited 19 February 2005).]