Offord, Malcolm, author.

Green, M. M., author. Igwe, C. E. , author. Igwe, G. E., contributor. Iroaganachi, J. O., contributor.

Lipkind, William, author.

Bryant, Margaret M., author. Aiken, Janet Rankin, author.

Mercer, Samuel A. B., author.

Zeitlin, Jacob, author.