Harry's site was very good for its day but his illness precluded him from taking it very far after a time, and today there are a ton of sites out there with the same information. Charlie Craven's Flybox is the successor 'in spirit' to troutflies.com in my mind: http://www.charliesflyboxinc.com/flybox/

You can also go to the Wayback Machine and type in troutflies.com to recover the original site. Nothing ever disappears from the Internet...