known.

I have also been much aided by the study of a portion of the Archives of
Simancas, the originals of which are in the Archives de l'Empire in
Paris, and which were most liberally laid before me through the kindness
of M. le Comte de La Borde.

I have, further; enjoyed an inestimable advantage in the perusal of the
whole correspondence between Philip II., his ministers, and governors,
relating to the affairs of the Netherlands, from the epoch at which this
work commences down to that monarch's death. Copies of this
correspondence have been carefully made from the originals at Simancas by
order of the Belgian Government, under the superintendence of the eminent
archivist M. Gachard, who has already published a synopsis or abridgment
of a portion of it in a French translation. The translation and
abridgment of so large a mass of papers, however, must necessarily occupy
many years, and it may be long, therefore, before the whole of the
correspondence--and particularly that portion of it relating to the epoch
occupied by these volumes sees the light. It was, therefore, of the
greatest importance for me to see the documents themselves unabridged and
untranslated. This privilege has been accorded me, and I desire to
express my thanks to his Excellency M. van de Weyer, the distinguished
representative of Belgium at the English Court, to whose friendly offices
I am mainly indebted for the satisfaction of my wishes in this respect.
A letter from him to his Excellency M. Rogier, Minister of the Interior
in Belgium--who likewise took the most courteous interest in promoting my
views--obtained for me the permission thoroughly to study this
correspondence; and I passed several months in Brussels, occupied with
reading the whole of it from the year 1584 to the end of the reign of
Philip II.