1910, he was approached by the American Civic Association for advice on the creation of a new bureau of national parks. This initiated six years of correspondence, including this letter to the president of the Appalachian Mountain Club, dated January 19, 1912:

The present situation in regard to the national parks is very bad. They have been created one at a time by acts of Congress which have not defined at all clearly the purposes for which the lands were to be set apart, nor provided any orderly or efficient means of safeguarding the parks ... I have made at different times two suggestions, one of which was ... a definition of the purposes for which the national parks and monuments are to be administered by the Bureau.