Crater Lake National Park: Administrative History by Harlan D. Unrau and Stephen Mark, 1987
CHAPTER FIVE: General Administrative Considerations for Crater Lake National Park: 1902-1916
B. RULES AND REGULATIONS FOR CRATER LAKE NATIONAL PARK: 1902-1916
In accordance with the provisions of the park establishing act, the Department of the Interior issued rules and regulations for the park on August 27, 1902. Regulations were also drawn up governing the impoundment and disposition of loose livestock found within the park boundaries. 
With the growth and development of the park these regulations were revised and updated on June 10, 1908, and March 30, 1912.