I am presently performing research on the various counterstamps which appear on Philippine guerrilla notes in general, and on the 1941 One Peso Cebu note in particular. I am attempting to compile a detailed list of the municipalities which used counterstamps. With respect to the 1941 One Peso Cebu note, I am also compiling a list of the dates the counterstamps were used and a geographical distribution.

An author who wrote about Philippine guerrilla notes and lightly touched upon the counterstamps is John M. Hunt. He self-published in the Philippines a number of books/monographs on Philippine guerrilla notes, including "World War II Emergency Currency for Mountain Province" and "Caveat Emptor." Does anybody know of any other books/monographs he published and, if so, where they may be obtained?