Hook - Mustad R73-9671, size 4
Thread - Black
Tail - Barred wood duck flank
Ribbing - Oval gold tinsel
Body - White yarn, uni yarn etc
Hackle - Light brown, long and soft, sparse, beard
Wing - Gray squirrel tail*
Cheeks - Jungle cock

*Book recipe calls for the wing to be "small bunch of shorter gray squirrel tail over longer, larger bunch of same"

I simplified the wing with one bunch of squirrel tail

Reference - Perrault's Standard Dictionary of Fishing Flies and Forgotten Flies