RkyMtnGuy,

To add to the references provided by adso4, here is one more:

Mayflies the Angler and the Trout by Fred L. Arbona, Jr. This book has an appendix on tying, and a pretty comprehensive sequence of Mike Lawson tying a No-Hackle.

I know you were asking specifically for a Harrop sequence, but can't do much harm to check out the above book.

Cheers,
Hans W


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