The Rocky mountains of Colorado attract thousands of visitors each year. There are more 14ers in this state than any other, the POC climbs these mountains quite often. The POC generally sanctions one trip each year over Labor Day weekend.
Book: Colorado 14er Disasters: Victims of the Game
Book: Colorado's Fourteeners, 3rd Ed. From Hikes to Climbs
Books: Colorado Mountain Guidebooks (Google them)