Convincing evidence of the early and rapid diffusion of Hispanic culture in the New World is provided by the study of the book trade. The latter makes clear that neither purchasers nor book collections were confined to vice-regal capitals but were also present in provincial towns and even in mining camps. The variety of imported books increased in time but the staples of trade remained the professional literature of the clergy. With meticulous bibliographical detail the present volume presents the titles of 153 different works of the sixteenth century preserved in the Public Library at Guadalajara in Mexico, all products of 24 presses of Salamanca, Spain, about one quarter of which were apparently owned by Frenchmen. The titles refer mainly to commentaries on the Gospels, on Aristotle, and on St. Thomas Aquinas, sermons, and here and there a work of jurisprudence. Aside from Las partidas of Alphonso X, De natura novi orbus . . . of José Acosta, and possibly Juan de Pineda’s La monarquía eclesiástica o Historia universal del mundo, and his Agricultura cristiana in 35 dialogues, the historian is likely to find few titles of interest. An appendix of 66 illustrations of portadas enhances this volume as a bibliophile’s delight.