# Thumb 1 Thumb 2 Form Number Division Title Where Used EKU LKU Notes Revision Actions
571 3874 Book to keep statistical records of registration numbers in branch POs
572 3876 Patron's Order for forwarding registered mail
573 3877 Firm mailing book for Accountable Mail 15 entries duplicate, see also 3881 & 3882
574 3877a Firm mailing book for acceptance of Insured, COD, or Certified 1969 DLS
575 3881 Firm Mailing Book 30 entries duplicate, see also 3877 & 3882
576 3881-A Receipt for mail 1939 ASW
577 3882 Firm Mailing Book originally 30 entries triplicate, by 1914 reduced to 5 entries duplicate; see also 3881 & 3877
578 3882-A Certificate of Mailing - Firm Mailing Book Provides proof of mailing Wawrukiewicz, Domestic ch. 44
579 3883 Firm Delivery Receipt for Accountable Mail and Bulk Delivery Mail
580 3886 Desk Delivery Book Registry