Ryan Silven makes many first ascents in Rocky Mountain National Park, Colorado. Problems include Blood of Kaiser (V10),
The Shameless Pinch (V6), Boots with the Fur (V8), Gravel Pit (V8), Notorious (V9), Upper Bot (V5), and New Blue Blood (V9). Jamie Emerson recently published a book on Colorado bouldering, called Bouldering Rocky Mountain National Park & Mount Evans, which can be purchased here.