Wendell Phillips (1859). “Fraternity Lecture of Wendell Phillips, Esq: Boston, Oct. 4, 1859. Also, Letter of Mr. Phillips to Judge Shaw and Prest. Walker”, p.6
Mark Twain (2014). “Mark Twain on Common Sense: Timeless Advice and Words of Wisdom from America's Most-Revered Humorist”, p.23, Skyhorse Publishing, Inc.
Ernestine Louise Rose (2008). “Mistress of herself: speeches and letters of Ernestine L. Rose, early women's rights leader”, The Feminist Press at CUNY