"Is he the greatest of caliphs?
"In Desert and Wilderness"
Henryk Sienkiewicz
In front of the platform were spread upon the ground sheep hides for the Mahdi, the caliphs, and eminent sheiks.
"In Desert and Wilderness"
Henryk Sienkiewicz
"A legend of the days of the caliphs.
"From the Car Behind"
Eleanor M. Ingram