You can check to see if the library has a specific book by searching the online catalog. In the catalog, you can search by Author, Title, or Subject. The results will show the call number where the individual books are found. 
If you are unable to find the book you want, you can contact a library through the Chat with a Librarian feature from 8:00 am to 5:00 pm Mon-Thurs and 8:00 am to 4:00 pm on Fridays or by emailing accclib@allencc.edu.