This book is a catalog of documents in the archives of the Cuerpo de Vigilancia de Manila, National Commission for Culture and the Arts (Philippines). The content relevents to Philippines history and revolution, 1896-1898.

Thomas P. Walsh has compiled a unique collection of some 1,400 published and unpublished American musical compositions related to the Philippines during the American colonial era from 1898 to 1946. For the guide, Walsh surveyed a wide array of sources: published songs listed in WorldCat, online catalogs of sheet music collections of university libraries and major public and private research libraries, etc.