For students browsing for books, I suggest the library put up book categories/subject titles on the ends of each bookcase, below the call numbers. This can make it significantly easier to find where we are when looking for books in the library -- after all, we process words much faster than alphanumeric call numbers. Thank you!
From: an undergraduate student

Patricia Selinger, Head, Preservation Department, VCU Libraries, responds...
Thank you for this great suggestion! The Preservation Department is responsible for maintaining the call number guides throughout the stacks. With our stacks overcrowded, we shift collections regularly to make room for new materials. The call number guides become obsolete quickly in this environment. We haven't had subject guides before but we are looking at solutions that will help students browse by subject. Look for posters in the near future.