When the Iwo Jima stamp was proposed, some people protested because it would picture living people - a violation of postal regulations. However, once it was issued, it became the most popular U.S. commemorative at that time.
1901 Pan-American Issue – 2c Fast Express Train single. Used by October 31, 1901, Buffalo, NY, Pan-American Station machine cancel on all-over color Exposition cover produced by the Niagara Envelope Manufactory. The cover centrally features the Albright Art Gallery, along with the address at bottom right. Buffalo & Cincinnati Railroad Post Office TR 37, RPO handstamp on reverse.