Here are some fantastic books and articles that I have read and strongly recommend to everybody, even if you don’t agree with Catholicism or libertarianism. I link the books to Amazon.com and the articles to the articles themselves.
The Law by Frédéric Bastiat
Liberty Defined by Ron Paul.
Free is Beautiful: Why Catholics should be libertarian by Randy England
“Catholic Sources and the Declaration of Independence” by Rev. John C. Rager, S.T.D.
“America Before the Entitlement State” by Yaron Brook and Don Watkins