# Thumb 1 Thumb 2 Form Number Division Title Where Used EKU LKU Notes Revision Actions
1631 3547 Notice To Mailer Feb 1968 Card sending current address back to sender of a (forwarded?) item.
1632 3579 POSTAGE DUE
1633 3606-D Certificate of Bulk Mailing rev. January 2016
1634 3665 Certificate of Mailing January 2017
1635 3907 Present This At Window (card) no revision notation
1636 3579 POSTAGE DUE used Dec 30, 1975 Tuscon, AZ
1637 3813a Insured Parcel return receipt but NOT numbered 3811?
1638 3849-A Delivery Notice Or Receipt Rev. Oct. 1980
1639 none (Registered Mail Window Receipt0 San Francisco, CA March 21, 1918 designed specifically for use on foreign bound mail. Registered mail goes to "every post office in the world".
1640 Label 89 Dispatch Unit Postmark 1964 1964