BADCOCK, John Jr. Slaves to duty : a lecture delivered before the South Place Junior Ethical Society on January 29, 1894.
ethicsBADCOCK, John Jr.MARTIN, James J.– London [W. Reeves], 1894. 30 p.
A defense of philosophical egoism
– New York : Benj. R. Tucker, 1906. 41 p. 17 cm.
New York Public Library
– Detroit, Michigan: Laurance Labadie,, 1938. 39 p. 18 cm
CIRA, Lausanne; Library of Congress; New York Public Library
– Slaves to duty (Libertarian Broadsides, 2) / John Badcock ; introd. Sydney E. Parker, notes James J. Martin. USA-Colorado Springs : Ralph Myles, 1972. 34 p. ; 22 cm.
CIRA, Lausanne
– Noontide Press (1984?). introduction by S. E. Parker and an appendix consisting of the essay Egoism by John Beverley Robinson. 34 p. ISBN 087926-013-0. Pb; 34 pp.