Tzamalis, Anastasios P., Ta Nomismata tis Frankokratias (The Numismatics of Frankish Greece), Ekdoseis Noymmio, Athens, 1991, 231 pages, softcover. A Greek reference on coins of the Crusader States. The coin illustrations are mostly from Schlumberger. There are nice reproductions of city views of the different states considered in the catalogue. It is laid out well with several useful indexes. A nice overview, in Greek language, ex James Farr Collection Library.
Estimate: 10-20 USD