J. Spencer Trimingham was Professor at the Near East School of Theology in Beirut, Lebanon. John O. Voll is Professor of History at Georgetown University.
Praise for the previous edition: "An extremely useful general history of the Sufi orders...it fills a notable gap."--American Anthropologist Praise for the previous edition: "A pioneer effort to present the history of the Sufi orders."--The Times Literary Supplement "An extremely useful general history of the Sufi orders...it fills a notable gap."--American Anthropologist "It's good to have this work kept in print, as it is still the best available on the subject. John Voll has written an updating foreword which sets the material in a fresh and challenging perspective."--Herbert Mason, Boston University "...[Trimingham's]Sufi Orders remains a classic. He provides a readable account of Sufi praxis, the diffusion of mystical ideas and the impact of the orders on the Muslim Ummah."--Abdin Chande, St. Mary's State College of Maryland "This highly informative and well researched work is indispensable to the study of contemporary Islamic mysticism. This new edition is more than welcome."--Tamara Albertini, University of Hawaii "An indispensable reference book for the organizational, sociopolitical side of Sufism. It's good to have it in print again."--John Perry, University of Chicago