From “The Sanusi Letters: A checklist”, by Knut S. Vikør. Available freely online.
“The obvious importance of the Sanūsī order has made it one of the better studied movements of nineteenth-century Islam. Traditionally, however, the movement has been known mostly from external sources, in particular French colonial observers, and from overviews such as those of E.E. Evans-Pritchard and Nicola Ziadeh. There exists, however, a rich body of material from inside the order. They include the scholarly works of its masters, but also non-literary material such as letters of various types. In recent years, more and more of these have been published in various works on the Sanusiyya. They are, however, spread throughout many publications and it may be hard to obtain an overview of them. The present list is a survey of known letters to and from the Sanūsī order.”
Abstract: In this article, I examine the role of Sufism (and Sufi leaders) as they relate to anti-colonial political and military resistance movements. Sufism is often viewed as a non-violent and non-political branch of Islam. However, I argue that there are many historical examples to illustrate the presence of anti-colonialist Sufi military movements throughout the “Muslim World,” and I give particular attention to the cases of ‘Abd al-Qadir of the Qadiriyya movement and his anti-colonialist rebellion against France in Algeria in the 1800s, as well as that of Italian colonialism in Libya and the military response by the Sanussi order. Thus, while Sufism clearly has various teachings and principles that could be interpreted to promote non-violence, Sufi political movements have also developed as a response to colonialism and imperialism, and thus, one should not automatically assume a necessary separation from Sufism and notions of military resistance.