File:Alfred Butts letter frequencies.JPG

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DescriptionAlfred Butts letter frequencies.JPG	English: Alfred Butts tabulated the frequency of letters in words of various length, using examples in a dictionary, the Saturday Evening Post, the Herald Tribune, and the New York Times. This was used to design the game Scrabble.
Date	before 1948
Source	Courtesy National Scrabble Association, reproduced in Wall Street Journal
Author	w:Alfred Butts
Permission ( Reusing this file)	Public domainPublic domainfalsefalse This work is in the public domain in that it was published in the United States between 1923 and 1977 and without a copyright notice. Unless its author has been dead for several years, it is copyrighted in jurisdictions that do not apply the rule of the shorter term for US works, 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. See this page for further explanation.

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