The posting outlines how I have: 1) mirrored metadata and full text content from the Internet Archive, 2) made the mirrored content accessible through VUFind, and 3) implemented a rudimentary text mining interface against the mirror.
The “Catholic Portal” is intended to be a research tool centered around “rare, unique, and uncommon” materials of a Catholic nature. Many of these sorts of things are older as opposed to newer, and therefore, many of these things are out of copyright. Projects such as Google Books and the Open Content Alliance specialize in the mass digitization of out of copyright materials. By extension we can hope some of the things apropos to the Portal have been digitized by one or more of these projects.