File:Ebbets field brooklyn.jpg

Postcard showing Ebbets Field, ca. 1930-1945. Published without a copyright notice, is therefore in the public domain.

See: http://commons.wikimedia.org/wiki/File:Ebbets_Field,_Brooklyn._NY.jpg, This work is in the public domain in that it was published in the United States between 1923 and 1977 and without a copyright notice. Unless its author has been dead for several years, it is copyrighted in jurisdictions that do not apply the rule of the shorter term for US works, 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. See http://copyright.cornell.edu/resources/publicdomain.cfm

The two-dimensional work of art depicted in this image is in the public domain in the United States, either because it was first published before 1929, or for the reason described either above or below this template. This photograph of the work is also in the public domain in the United States (see Bridgeman Art Library v. Corel Corp.).
Note: Unless the creator died more than 70 years ago, the work of art is not public domain worldwide.