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.
Cost of US Stamp Scott Catalogue # Q5: 5c 1913 Parcel Post
Parcel Post Service Begins Mystic Stamp Discovery Center
Daniel F. Kelleher Auctions, LLC Sale - 774 Page 211
NOVEMBER 29, 1913 - Calaméo
Mail carrier 20th century hi-res stock photography and images - Alamy
Daniel F. Kelleher Auctions, LLC Sale - 774 Page 211
People sent by mail during the early years of parcel post
US Stamp Price Scott Cat. # Q1: 1913 1c Parcel Post
All pictures show the actual item.
USA #Q8 Parcel Post Postage Stamp 1913 Used
Find many great new & used options and get the best deals for US 1913 20¢ Parcel Post Stamp #Q8 Used CV $25 at the best online prices at ! Free
US 1913 20¢ Parcel Post Stamp #Q8 Used CV $25
1912-1913 Parcel Post #Q1-Q12 - Parcel Post & Special Delivery - USA
U.S. 1913 parcel post stamps enjoy popularity