I decided to share my Cunningham 1932 tube handbook. It was copyrighted but the US copyright law state that work with published with notice, between 1923 and 1963. Is in the public domain if copyright was not renewed. And this is the case here no renewal. In the text file I have placed a link to my private rapidshare account. Due to the size I could not upload it here. Rapidshare is 100% safe and legal in this this case. Nothing to worry about
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