Paiutes, Mormons and Mericats: A History of Grand Canyon-Parashant National Monument by Frederick L. Brown is a history of the Grand Canyon-Parashant National Monument from the late 19th century into the 1930s.

The document is marked as a draft and the table of contents lists several sections as [to come] but I don't believe that a finished version is available - however the sections that are complete form a substantial work and I am glad this document has been made available.

Source: Pdf from the National Park Service's Historical Documents Page.

The author - Frederick L. Brown - also produced other documents for the National Park Service including The Center of the World, The Edge of the World: A History of Lava Beds National Monument.