I am just starting to play around with Google Books. It appears that entire Books have been Digitized and put on line.
I have just downloaded Official Documents Connected with the Definition of the Dogma of the Immaculate Conception of the Blessed Virgin Mary produced in 1855.
Interesting Titles such as The Traditions of the Syriac Church of Antioch Concerning the Primacy and Prerogatives of Saint Peter and of His Successors the Roman Pontiff, by the Most Reverend Cyril Behnam Benni (London: Burns, Oates & Co, 1871
or this Tome, The Apostolic Liturgy and the Epistle to the Hebrews published in the 1800’s look great
All Can be downloaded for Free in PDF Format
I am curious if anyone else has discover good Catholic and Apologetic works on there and if so what.