Raise your hand if you know what these are ✋ Some may have grown up using them at the library. Others may have overlooked them on their last visit to Doheny Library. Well, class is in session. Before the days of searching an online database for a book or item, library-goers would search card catalogs. These small drawers were the primary book-finding system and contained index cards with details about a library's collection. usclibraries uscedu #cardcatalog #libraryscience