# Thumb 1 Thumb 2 Form Number Division Title Where Used EKU LKU Notes Revision Actions
581 3886 Carrier registration book for insurance, COD, or certified
582 3891½ Notice to sender of letter prepaid and prepared for registration found in letter drop 1913 DLS replaced by 3892
583 3892 Registered mail found in ordinary mail Oct 1955 1957 Forms Book ASW replaces 3891½
584 3894 Return Receipt for Merchandise 1988 ASW
585 3896R Carrier's Registration Book City Delivery offices
586 3896 City Carrier Registration Book If 3807 kept in PO - In 1948 PL&R. 1957 Forms Book ASW
587 3896B Notice to Sender of short-paid letter registered by carrier
588 3897R Rural Carrier's Registration Book for rural offices
589 3897 Rural Carrier's Registration Book If 3807 kept in PO - In 1948 PL&R. Circa 1950
590 3898R Card Notice to patrons regarding registry system for rural offices