English: Penn Central sheet metal worker A. A. Muhlbauer of Samuel Rea Shops in Hollidaysburg, Penn. uses hydraulic riveter to affix cap to cover seam of boxcar's roof sheets in the railroad's 1970 campaign to construct new cars to improve business.
Date
Source
Penn Central Transportation Company
Author
Joseph Shallit--Manager, Employe Publications
Licensing
Public domainPublic domainfalsefalse
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.