Here are a couple of books for the Salmon Fly fans.
How to Dress Salmon Flies
By T E Pyce-Tannat
The Salmon Fly
By G M Kelson
http://www.archive.org/search.php?query=How%20to%20Dress%20Salmon%20Flies%20AND%20mediatype%3Atexts
Donald : These are both great reference books to have in your library . For learning purposes I would recommend Pryce-Tannatt over Kelson …Frank