For sale here is a yellow stonefly in excellent condition, tied by the legendary Catskill fly-tier, Herman Christian.
This fly comes from the collection of a Sullivan County sportsman who, as a kid, grew up around many of the legendary Catskill fly tiers. His uncle was also close friends with many of them. His Herman Christian flies were acquired from the daughter of Bruce Moore who received them directly from Herm Christian. Herm Christian was a lifelong friend of Bruce and Ella Moore, who lived near Hasbrouck, NY. For three years prior to his passing, Herm Christian was cared for by Ella Moore. When she could no longer care for him, he entered the Sullivan County Infirmary where he finally passed away.
Disclosure on all of the "original" Catskill flies here on my website: I did not see these people tie these flies, so I cannot tell you they are 100% authentic. I do however consider my client and his provenance to be absolutely credible. Also, Dave Catizone has inspected each fly in his collection, written up authentication letters for the framed flies (some for sale here), and told me he believes the unframed, individual flies to be authentic as well.