Besides these public repositories, there are several private collections to the owners of which I am largely indebted for the liberal manner in which they have opened them for my benefit. I may mention, in particular, the late Lady Holland, who kindly permitted copies to be made by Señor Gayangos from the manuscripts preserved in Holland House; Sir Thomas Phillips, Bart., who freely extended the same courtesy in respect to the present work which he had shown to me on a former occasion; and Patrick Fraser Tytler, Esq., the late excellent historian of Scotland, who generously placed at my disposal sundry documents copied by him in the public offices with his own hand, for the illustration of the reign of Mary Tudor. In Spain the collection made by Señor Gayangos was enriched by materials drawn from the family archives of the marquis of Santa Cruz, whose illustrious ancestor first had charge of the Spanish armada; from the archives of Medina Sidonia, containing papers of the duke who succeeded to the command of that ill-starred expedition; and from the archives of the house of Alva,--a name associated with the most memorable acts of the government of Philip. The manuscripts, thus drawn from various quarters, were fortified by such printed works as, having made their appearance in the time of Philip the Second, could throw any light on his government. Where such works were not to be purchased, Señor Gayangos caused copies to be made of them, or of those portions which were important to my purpose. The result of his kind, untiring labors has been to put me in possession of such a collection of authentic materials for the illustration of the reign of Philip as no one before had probably attempted to make. Nor until now had the time come for making the attempt with success. There still remained, however, some places to be examined where I might expect to find documents that would be of use to me. Indeed, it is in the nature of such a collection, covering so wide an extent of ground, that it can never be complete. The historian may be satisfied, if he has such authentic materials at his command, as, while they solve much that has hitherto been enigmatical in the accounts of the time, will enable him to present, in their true light, the character of Philip and the policy of his government. I must acknowledge my obligations to more than one person, who has given me important aid in prosecuting my further researches.