Philosophy Iranienne et Philosophy Comparee

This edition now from editor Jean Moncelon can be found here.

The first of the four lectures which make up this fine small book by Corbin can be found in English translated by Peter Russell as

Corbin, Henry. The Concept of Comparative Philosophy. Ipswich: Golgonooza Press, 1981.

This is a revised version of a lecture delivered in December 1974 at the University of Teheran which was printed in Sophia Perennis (I do not have details of that edition). This important late essay is well worth seeking out though it is now long out of print. [For those who may not know, WorldCat can help locate libraries that hold any book.]