Catholic Encyclopedia
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The Catholic Encyclopedia, or the Old Catholic Encyclopedia, is an English-language encyclopedia published by The Encyclopedia Press. The first volume appeared in March 1907 and it was completed in April 1914.
The encyclopedia was designed to serve the Roman Catholic Church and does not include information which has nothing to do with the Church. It explains matters from the point of view of the official Catholic doctrine, as it was during the time of Pope Pius X. It records the accomplishments of Catholics and some others in nearly all intellectual and professional pursuits, including artists, educators, poets and scientists.