Some materials are non-circulating; One may only view those items on site or request scans. 

Special Collections

To request to view or copy Special Collections materials, you must first create a Special Collections account on the Aeon system. 
After creating an account, you can schedule a time to visit the Special Collections reading room, request that manuscript materials or rare books be retrieved for your review, or request scans of come materials.  (see links below).

Other Collections

To request a scan of portions of print items, first login to OneSearch. Then look for the Request a scan links.