DescriptionBaltimore and Ohio Columbian Strata Dome.JPG
Postcard depiction of the Strata Dome cars used on the Balitmore and Ohio railroad's train "The Columbian". These were at one time the only dome coach cars on the rails in the eastern US.
Date
Not mailed or otherwise dated. The dome cars went into service with the train in 1949. This is also a linen-type postcard, which was popular from the 1930s to early 1950s. This is likely circa late 1940s to early 1950s.
The card has no copyright markings on it as can be seen in the links above.
United States Copyright Office page 2 "Visually Perceptible Copies The notice for visually perceptible copies should contain all three elements described below. They should appear together or in close proximity on the copies.
2 The year of first publication. If the work is a derivative work or a compilation incorporating previously published material, the year date of first publication of the derivative work or compilation is sufficient. Examples of derivative works are translations or dramatizations; an example of a compilation is an anthology. The year may be omitted when a pictorial, graphic, or sculptural work, with accompanying textual matter, if any, is reproduced in or on greeting cards, postcards, stationery, jewelry, dolls, toys, or useful articles.
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=Postcard depiction of the Strata Dome cars used on the Balitmore and Ohio railroad's train "The Columbian". These were at one time the only dome coach cars on the rails in the eastern US. |Source=[http://www.ebay.com/itm/ant...