Image: Alfred Butts letter frequencies
Description: 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.
Title: Alfred Butts letter frequencies
Credit: Courtesy National Scrabble Association, reproduced in Wall Street Journal
Author: w:Alfred Butts
Permission: This work is in the public domain because 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. Беларуская | Čeština | Deutsch | English | Español | Français | Italiano | 日本語 | Македонски | Nederlands | Português | Русский | Slovenščina | ไทย | +/−
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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