Muslim Saints and Mystics.
U. of Chicago Press, 1966. First edition.
U. of Chicago Press, 1966. First edition.
San Francisco: Sierra Club Books, 1990. First edition, first printing. Briefly inscribed and dated in the year of publication by the author on the title page.
Stewart, Tabori & Chang, 1995. First edition, first printing.
Heritage Press, 1970. Yellow cloth with red title label. Sandglass newsletter.
Heritage Press, 1970. Tan cloth backed patterned boards.
Oxford, 2005. First edition, first printing.
Coronet, 2012. First edition, first printing.
Counterpoint, 1997. First edition, first printing.
Oxford University Press, 1992. Illustrations by Marilyn Heeger. First printing thus.
KTD Publications, 2009. First edition, first printing.
U. of Hawaii Press, 1992. First edition, first printing.
Oxford, 1984. First edition, first printing.
Cornell U. Press, 1995. First edition, first printing.
Riverhead, 1999. First edition, first printing.
Frog, Ltd., 1994. Later printing. Signed and inscribed by the author.
Folio Society, 1992. First printing thus. Teal cloth.
Oxford, 2003. First edition, first printing.
Macmillan, 1961. First edition, first printing.
The Acorn Press, 1980. First edition, first printing.
Barnes & Noble, 1994.
Grove Press, 2006. First edition, first printing.
Modern Library, 1993. Later printing.
Charles E. Tuttle, 1987. Later printing.
Counterpoint, 2010. First printing thus. White wrappers, photographic cover. Paperback.
Shambhala, 1986. First edition, first printing.