Description Denis Julien\'s first biographer in 1933 called him the "Mysterious D.
This book, however, corrects that, presenting not only the first full-length story of the Life of Denis Julien, but also his.
Modern-day river runners know him from carved inscriptions along those rivers, but little else.
He was surmised to have been a fur trapper along the Green and Colorado Rivers in the 1830s and not much more than that was known.
Julien" because so little was known about him.
Description Denis Julien\'s first biographer in 1933 called him the "Mysterious D