• DEPOSITORY LIBRARY NUMBERS - Enter numbers using leading zeros, if necessary, to equal four numbers. Do not include dashes or spaces in the number. Examples: 0001, 0124A, 0636B.
  
  
• ITEM NUMBERS - Item numbers have between four and seven characters. Use leading zeros and dashes when necessary. Examples: 0001, 0553, 0017-A, 0018-C-01.
  
  
• PASSWORDS - If you have lost your password, or your password is invalid, please contact GPO Help.
  
  
• LIST OF CLASSES - If you do not know a specific item number, check the List of Classes, which lists all publications available for selection by depositories.
  
  
• ITEM LISTER - Prior to submitting items for selection or deletion, librarians are encouraged to check Item Lister to verify their current selection profile. The Item Lister is updated the first week of each month. Additions and deletions submitted after that date will not appear on the Item Lister until the following month.
  
  
• DEPOSITORY LIBRARY INFORMATION - If you identify errors in your address information for your depository, use the Depository Directory Update Form, accessible via http://www.access.gpo.gov/su_docs/fdlp/tools/ldirect.html#2.
  
  
• INCORRECT SELECTIONS - If you input an item number in error, you will need to contact GPO immediately via GPO Help. If you do not report your error, your receipts of publications may be affected and claims may not be honored.