Search for the item in WorldCat. When you find the record for the book, click on "Libraries Worldwide". The owning libraries display with those in Texas first.
SMU students, staff, and faculty can sign up for a TexShare Card that allows you to check out items at more than 500 libraries across the state.
If you are unable to travel to another library, you can also request items you find on WorldCat through Interlibrary Loan.
