English: Rays of sunlight beaming down on the Main Concourse floor of Grand Central Terminal. Many similar photos exist; this is the first one proven to be freely licensed. Unknown author, unknown date, published in 1950.
Date
Includes the Transportation Exposition c. 1923-29, though the plane (wing seen at left) was installed on May 20, 1929, dating the photo to c. 1930. circa 1925
date QS:P,+1925-00-00T00:00:00Z/9,P1480,Q5727902
, as stated by Kurt Schlichting in Grand Central Terminal, page 3.
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.