U.S. 1913 parcel post stamps enjoy popularity

When first issued, these stamps were only valid for parcel post and regular postage stamps were not authorized to pay postage for parcel post mail.

Parcel Post Service Begins Mystic Stamp Discovery Center

Q8 - 1913 20c Parcel Post Stamp - Airplane Carrying Mail - Mystic Stamp Company

Histor-E Idaho State Historical Society

U.S. 1913 parcel post stamps enjoy popularity

1913 POST CARD Syracuse NY New York High School w/ 1¢ Franklin Stamp $10.00 - PicClick

U.S. 1913 parcel post stamps enjoy popularity

USA Parcel Post Stamps used 1913 Q1, Q5, Q7, Q8, Q11

Precious Packages-America's Parcel Post Service

Jay Smith & Associates: United States: New Arrivals: Stamps - Page 1

USA Parcel Post Stamps used 1913 Q1, Q5, Q7, Q8, Q11

File:Stamp US 1913 1c parcel.jpg - Wikipedia

Oleanders on the Desert & Cancellation Stamps

United States 1913 PARCEL POST Stamps Q1-Q6 Q8 (2 copies) Q10 Q11 Q12

U.S. Parcel Post stamps of 1912–13 - Wikipedia

Collectors Club Philatelist: 102.1 2023 Jan/Feb by 58W40 - Issuu