Parcel post. Undelivered parcels must be endorsed with reason for nondelivery when returned to sender under pledge to pay return postage; [issued by] 3d assistant Postmaster General.
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Parcel post. Undelivered parcels must be endorsed with reason for nondelivery when returned to sender under pledge to pay return postage; [issued by] 3d assistant Postmaster General.
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Parcel post. Undelivered parcels must be endorsed with reason for nondelivery when returned to sender under pledge to pay return postage; [issued by] 3d assistant Postmaster General.