The barcode number on the back of your Princeton University ID card is required for most library services. It is a 14-digit number that begins with 22101. You should always enter it without any spaces. (Note that the barcode is called the Patron ID in the Borrow Direct system.) If you have a new Princeton University ID card, your barcode will need to be activated by staff at the circulation desk in Firestone or any branch library.

EndNote and Refworks are two bibliographic management software packages useful for keeping track of research sources and for generating notes and lists of works cited. These packages can be used to manage bibliographic citations for research papers, theses, and books. For more information, see http://library.princeton.edu/help/en-rw.php and http://www.pppl.gov/library/RefWorksweb/RefWorks.htm, or send a message to refdesk@princeton.edu .

Besides Firestone Library, the Princeton University Library system includes 14 separate discipline-specific libraries, each of which provides specialized reference and other services. For more information, see http://libweb.princeton.edu/libraries/libraries.php .