Does the library have any published papers about Chiropractic research?
Most of the library's research databases are for members of the Palmer College of Chiropractic community. You would need network login privileges to access the full text of most of the documents found.
You may search the college catalog, or use the college's Palmer OneSearch function from the library's homepage library.palmer.edu to see may be available.
A simple search for the term subluxation AND chiropractic limited to full text availability and from scholarly and peer reviewed publications returns over 5,000 results.
The college does make quite a lot of original research conducted by the college freely available from their research institute website, those papers are located here...
I hope this information was useful.
David D. Palmer Health Sciences Library