The Libros Perdidos (Lost Books) series is a Collaboration between the Puerto Rico Archival Collaboration, the Centro de Estudios Iberoamericanos of the University of Puerto Rico, Arecibo and the Puerto Rican Studies Institute.  We will publish a new series of books on the history of Puerto Rico.  The book series will promote access to valuable but never published texts.  Books will be published as formatted books in PDF with the option of user-purchased on-demand printing.