DescriptionPioneer Zephyr first run and millionth mile covers.jpg
English: Commemorative postal covers for the first run and millionth mile of the Pioneer Zephyr. These covers were carried aboard the train on November 11, 1934 (first run) and December 29 1939 (millionth mile). The graphic was applied by the Chicago, Burlington and Quincy Railroad to commemorate the events. The lower cover for the millionth mile commemoration also shows an example of a perfin stamp, with the letters "CBQ", the reporting mark of the Chicago, Burlington and Quincy Railroad, perforated into the stamp itself.
Date
The commemorative covers were created in 1934 and 1939. The scan of the covers was created in 2005.
Source
This is a scan of the original artifacts in the collection of Sean Lamb (User:Slambo)
Author
The graphics on the envelopes were created by the Chicago, Burlington and Quincy Railroad, a corporation that ceased to exist in 1970.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.