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File:Early cork center baseball schematic from Evolution of the Ball.png

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Early_cork_center_baseball_schematic_from_Evolution_of_the_Ball.png (548 × 550 pixels, file size: 166 KB, MIME type: image/png)

Description Cross-section illustration of an early cork baseball from the article "Evolution of the Ball".
Date circa 1963
date QS:P,+1963-00-00T00:00:00Z/9,P1480,Q5727902
Source Google Books - Rawlings Sporting Goods Company Staff (1963-07). "Evolution of the Ball". Baseball Digest: 69.
Author Unknown authorUnknown author
Permission
(Reusing this file)		 see File:Evolution of the Ball, Baseball Digest July 1963.djvu

Original caption:

The cork center baseball was introduced in 1910. The new "live" ball led pitchers to develop a number of freak deliveries, most of which were outlawed in 1920.

Licensing

Public domain
This work is in the public domain because it was published in the United States between 1929 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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Baseball Digest: This image or file was extracted from an issue of Baseball Digest published before January 1, 1964. A search of the following sources: reveals no renewals for the title "Baseball Digest" within the required period for filing. Additionally, independent research by the Library of the University of Pennsylvania, "First copyright renewals for periodicals", confirms the absence of filed renewals.

File history

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Date/TimeThumbnailDimensionsUserComment
current07:06, 29 September 2009Thumbnail for version as of 07:06, 29 September 2009548 × 550 (166 KB)Struthious Bandersnatch{{Information |Description=Cross-section illustration of an early cork baseball from the article "Evolution of the Ball". |Source=Google Books - {{cite journal | title = Evolution of the Ba
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