The Malam Haliru Memorial Page
- A collection of documentation about a historian who lived in Wurno, Nigeria, sometime capital of the Sokoto Caliphate.
- http://human.cc.hirosaki-u.ac.jp/philips/mhaliru.htm

Usuman dan Fodio
- A profile of the Fulani religious and political leader, who established the Sokoto caliphate. [The Columbia Encyclopedia, Sixth Edition. 2001]
- http://www.bartleby.com/65/us/Usumanda.html

Usman dan Fodio and the Sokoto Caliphate
- A history of the Sokoto Caliphate and its origins in the disenchantment of Muslim scholars and teachers with the insecurity of the Hausa states and Borno.
- http://countrystudies.us/nigeria/9.htm

Some Contributions of the Sokoto Caliphate Scholars to the Study of Medicine
- Includes a brief history of the Sokoto Jihad (1804-1810) aimed at the restoration of Islam in Hausaland, which led to the Sokoto Caliphate; and a discussion of medical scholars of the time.
- http://www.webstar.co.uk/~ubugaje/med.html