In 1933, on a typical August day in Rocky Mountain National Park, 22-year-old Joseph Halpern put on a light blue shirt, light brown trousers, and heavy shoes. He left his parents at their campsite ...

On August 15, 1933, Joseph Halpern separated from his hiking partner on Rocky Mountain National Park's Flattop Mountain. As hours passed and the day darkened, Halpern's friend waited for the 22 ...