1. The Autobiographical Notes of Charles Evans Hughes
2. The Men of the Supreme Court;Edward G Lowry;The World's Work, A History of Our Time,1914
3. He emphasized, however, that while they "did the preliminary work in examining records and briefs and preparing copious memoranda" for each of the cert. petitions, Hughes "made it a practice to check them by;There is as yet no scholarly article on Hughes's clerks