# References  
Ayandele, E. A. 1974. The Educated Elite in the Nigerian Society: University Lecture. Ibadan, Nigeria, University of Ibadan Press.  
Behrendt, S. D., Latham, A. J. H. and Northrup, D. 2010. The Diary of Antera Duke, an Eighteenth-Century African Slave Trader. Oxford, UK, Oxford University Press.  
Behrendt, S. D. and Graham, E. J. 2003. African Merchants, Notables and the Slave Trade at Old Calabar, 1720: Evidence from the National Archives of Scotland. History of Africa, Vol. 30.  
Dike, K. O. 1956. Trade and Politics in the Niger Delta, 1830-1885. Oxford, UK, Clarendon Press.  
Goldie, H. 1901. Calabar and Its Mission. Edinburgh and London, Oliphant Anderson \& Ferrier.
Hallet, R. (ed.). 1964. Records of the African Association, 1788-1831. London, Thomas Nelson \& Sons.  
Imbua, D. L. 2009. The Role of Sierra Leoneans in the Development of Calabar, 18501960. Drumspeak International Journal of Research in the Humanities, Vol. 2, No. 3.  
Latham, A. J. H. 1973. Old Calabar 1600-1891. The impact of the international economy upon a traditional society. Oxford, UK, Clarendon Press.  
Lovejoy, P. E. and Richardson, D. 1999. Trust, Pawnship, and Atlantic History: The Institutional Foundations of the Old Calabar Slave Trade. The American Historical Review, Vol. 104, No. 2.  
Macmillan, A. 1968. The Red Book of West Africa. Historical and Descriptive, Commercial and Industrial Facts, Figures and Resources. London, Frank Cass.  
Marwick, W. 1897. William and Louisa Anderson: A Record of their Life and Work in Jamaica and Old Calabar. Edinburgh, United Kingdom, Andrew Elliot.  
Nair, K. K. 1972. Politics and Society in South Eastern Nigeria, 1841-1906. London, Frank Cass.
Noah, M. E. 1980. Old Calabar: The City States and the European, 1800-1885. Uyo, Nigeria, Scholars' Press.  
Udoka, I. A. 1991. The Impact of Private Foreign Investments on the Economy of the Lower Cross River Region, Nigeria: 1842-1955. PhD Thesis, University of Calabar, Nigeria.