February 3, 1915
Dear Mr. Steenrod:
Cooper never used mohair for the female Beaverkill, always, wool. You may find the shade in any fancy goods store. There is a sort of wool that is very soft and fuzzy. I had just the correct shade for F.B. light Cahill, etc. but used it up, and since then have had to take stuff a bit too dark. Some wools in pale shades have very good effects but are usually so poorly dyed that they soon fade when exposed to sun and air. That is the beauty of the far Eastern crewels – the dye is fast. They may not appear much better than wool when first used but soon show this superiority. When you can not get the mohair you need take wool.
Edited by John McDonald, by permission of Theodore Gordon Flyfishers.