Archive — The Museum of Public Relations
Bay 6 National Postal Museum
Small Queens of Canada: How one sale showcased the stamps' many usages
duplex cancel – Sparks Auctions
Eastern Auctions features classics in Nov. 8-10 sales
Small Queens of Canada: How one sale showcased the stamps' many usages
Sparks Auctions Sale - 46 Page 61
Collection Of Stamps, Postal History, And Currency
Postal History — The Joy of Stamps
1851-1861 Issues National Postal Museum
Stamp images hi-res stock photography and images - Alamy