According to this article found in the Tonopah Daily Bonanza, the 1916 Mardi Gras celebration began with a carnival opening on March 4 and concluding on Tuesday, March 7. The carnival included a pageant of the Knights of Momus and a parade with elaborate floats. Click the link on the caption to read the entire March 4, 1916 issue of the Tonopah Daily Bonanza.
The Knights of Momus is an established organization in charge of the Mardi Gras carnival. Read about the origins of the Knights of Momus and depictions of the 1916 Mardi Gras carnival here: http://publicdomainreview.org/collections/hand-book-of-the-carnival/