My Unsung Hero's would have to be:
David Kachel; for his discovery of SLIMT (Selective Latent Image Manipulation Technique) to give reduced development to negatives. I'm amazed that SLIMT hasn't become popular considering how well it works and how easy it is to do. Works really well with modern films.
Lynn Radeka; for recognizing the potential of Dennis McNutt & Mark Jilg's work using pin registered masks of Lith film for controling print contrast. His refinements and further developments of their techniques, and his Masking Kit, have completely changed and improved my printing.
Who are your Unsung Hero's? Why? Was it a technique? Was it images? Who had a profound effect on you as a photographer who you think deserves more recognition?