Front of timetable/brochure for the jointly operated Zephyr Rockets. The Chicago, Burlington and Quincy and Rock Island Railroads operated this route between St. Louis and Minneapolis/St. Paul from January 7, 1941 until 1967.
Date
The lower left of the flyer's back shows a 1-41 date. Service on the line started January 7, 1941.
This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. 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.
{{Information |Description=Front of timetable/brochure for the jointly operated Zephyr Rockets. The Chicago, Burlington and Quincy and Rock Island Railroads operated this route between St. Louis and Minneapolis/St. Paul from January 7, 1941 until 1967...
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