Baylor's libraries collections are very strong, but we don't have every book in the world. To see what books exist out there, use WorldCat (see link below). Using WorldCat is also the first step to borrowing that book (no matter where it is in the world) just as if Baylor owned it. Books that are found on WorldCat can be borrowed by making requests through Osofast (http://www.baylor.edu/lib/ils/).
If you find some information about a book or article that will help you in your research, but the Baylor Libraries don't own it - don't panic! We have a department in the library (called InterLibrary Services) which provides a program called OsoFast through which you can request books and articles from other libraries. And it doesn't cost you anything!
If we don't have access to the full-text of an article either in print or online, click on the BUInfoLinks button located in the article record. From there, click on "Request this article from OsoFast." Log in with your Bear ID and password and submit your request.
Make sure to get your requests for materials in early. While it depends on where the original materials are located, articles are generally received in electronic form 3-4 days after they are requested. Books and other physical materials are received within 4 days to 2 weeks after they are requested.