Salk_headlines.jpg (308 × 397 pixels, file size: 39 KB, MIME type: image/jpeg)

Description Photo of newspaper headlines about polio vaccine tests
Date
Source March of Dimes
Author March of Dimes
Permission
(Reusing this file)		 no renewal per search; The image contains readable text of headlines only. As a collage or collection of such front pages, the photo is an original image by the photographers and would not require permission from any of the newspapers. It is also of low resolution.

Licensing

Public domain
This work is in the public domain because it was published in the United States between 1930 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.
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 (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

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copyright status

public domain

inception

13 April 1955

media type

image/jpeg

data size

40,241 byte

height

397 pixel

width

308 pixel

checksum

0de375cbb9a51eec239e490f445fd09b52489e5a

determination method or standard: SHA-1

File history

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Date/TimeThumbnailDimensionsUserComment
current23:04, 20 October 2021Thumbnail for version as of 23:04, 20 October 2021308 × 397 (39 KB)LojweCropped 1 % horizontally, 1 % vertically using CropTool with precise mode.
06:21, 11 March 2009Thumbnail for version as of 06:21, 11 March 2009312 × 401 (41 KB)Wikiwatcher1{{Information |Description=Photo of newspaper headlines about polio vaccine tests |Source=various newspapers |Date=April 13, 1955 |Author= |Permission= |other_versions= }} ==License== {{PD-Pre1964}}

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