Image: 1941 Key System map
Description: Circa-1940 map of the Key System commuter trains. The source identifies it as being from 1941, but the note of the Golden Gate International Exposition indicates it is slightly earlier.
Title: 1941 Key System map
Credit: Oakland Wiki: Key System
Author: Key System
Permission: This work is in the public domain in the United States because it was published in the United States between 1927 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.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
The following page links to this image: