Publication suspended 1982-2004.
Some vols. have also a distinctive title.
Latest vol. consulted: New series vol. 1, no. 1 (2005).
Published for the Historical Society of Nigeria.
Vols. <5, no. 1- > distributed in the United States and Canada by Humanities Press.
Published in Ikeja, Nigeria by Longmans of Nigeria, 1965- Cf. New serial titles.
Published in Ibadan, Nigeria by Aboki Publishers, 2005-
New series vol. 1, no. 1 (2005)- called also New series vol. 2, no.2.