• Lessons Learned from Other Lives. Boston : The Arena Publishing Company, 1891. 2ème édition [1889]

• Fashion’s Slaves. Boston : The Arena Publishing Company, 1892.

• The People’s Cause. Boston : The Arena Publishing Company, 1892. 

• Civilization’s Inferno, or, Studies in the Social Cellar. Boston : The Arena Publishing Company, 1893. 

• Charles Darwin : His Life, and what the World Owes to Him. Buffalo, NY : Office of the Freethinkers' Magazine, 1893. 

• Gerald Massey : Poet, Prophet, and Mystic. Boston : The Arena Publishing Company, 1895.

• The Arena Gallery of Eminent Thinkers. Boston : The Arena Publishing Company, 1895. 

• Whittier : Prophet, Seer and Man. Boston : The Arena Publishing Company, 1896.

• Persons, Places and Ideas : Miscellaneous Essays. Boston : The Arena Publishing Company, 1896.

• The Century of Sir Thomas More. Boston : The Arena Publishing Company, 1896.

• A Poet of the People and After Sixty Years. Boston : The Arena Publishing Company, 1896.

• How England Averted a Revolution of Force ; A Survey of the Social Agitation of the First Ten Years of

      Queen Victoria’s Reign. Trenton, NJ : A. Brandt, 1903.

• In Defense of Free Speech ; five essays from The Arena (Trenton, N.J.), and written by B.O. Flower, Rev.

      Elliot White, Louis F. Post and Theodore Schroeder. New York : The Free Speech League, 1908.

• Christian Science as a Religious Belief and a Therapeutic Agent. Boston : Twentieth Century Company, 1910 [1909].

• Medical Medievalism in the Twentieth Century : an account of the remarkable transformation of the American Medical Association from a typical academic body of limited membership and rather conservative tendencies, into a huge political machine, undemocratic, boss-ridden and wholly un-American in its aims and method. New York : The National League for Medical Freedom, c1912.

• Progressive Men, Women, and Movements of the Past Twenty-five Years. Boston : The New Arena, 1914.

• The Patriot's Manual, dealing with the irrepressible conflict between two mutually exclusive world theories of government ; a compendium of facts, historical data, reasons and present-day chronicles, showing why every friend of fundamental democracy must oppose politico-ecclesiastical Romanism in its un-American campaign to make America “dominantly Catholic”. Fort Scott, KS : Free Press Defense League, 1915.

• Story of the Menace Trial : A Brief Sketch of this Historic Case With Reports of the Masterly Addresses by Hon. J.L. McNatt and Hon. J.I. Sheppard, Attorneys for the Defense. Aurora, MO : United States Publishing Co., 1916.

• Righting the People’s Wrongs ; a lesson from history of our own times. Cincinnati : The Standard Publishing Company, 1917.​​

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