WRLC / ALADIN Catalog
If the library does not have the book you need, try this catalog. Your requested book will be delivered in 2-3 days. It searches American, Catholic, Gallaudet, GT, GW, UDC, and Mason Libraries.
If the book is not available through the WRLC, use Interlibrary Loan Service (ILL). It will take at least two weeks to get the book.