Лефевр Э. Воспоминания биржевого спекулянта. – М.: Бомбора, 2021.
The New York Times. Субботний обзор книг Отиса Нотмана. 9 марта 1907 г. (Saturday Review of Books by Otis Notman, March, 9, 1907.)
«The New York of the Novelists, A New Pilgrimage» by Arthur Bartlett Maurice, Part 2: The Canons of the Money Grubbers, The Bookman, An Illustrated Magazine of Literature And Life, Volatility. XLII, September 1915 – February 1916, copyright 1916, Dodd Mead and C°.
New York Times, Saturday Review of Books by Otis Notman. March 9, 1907.