University of Notre Dame Catholic Pamphlets Collection (https://archive.org/details/universitynotredamecatholicpamphlets?&sort=date)
They span from 1800 to 2010, but the post Vatican II ones (e.g., the 1969 Catholics and Masons: Now Good Friends!) are not recommended.
There are catechisms (like the New St. Joseph's Baltimore Catechism) and many other good books. They're also categorized.
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Quote from: Wenura on November 23, 2023, 10:48:11 AMNot working
Yeah, they took that down awhile ago. Perhaps someone complained about some or all of the books possibly violating ©.