Exhibit 8 at the trial of Julius and Ethel Rosenberg, a drawing of an implosion-design nuclear weapon by David Greenglass, created a few days before the trial began in 1951. The drawing was the first time the implosion design was allowed to be made public. Despite being declassified by the Atomic Energy Commission, it was immediately impounded as a threat to national security by the Rosenbergs' lawer, and was only released in 1966 after an investigation into the Rosenberg trial evidence (where it was criticized by experts as very crude and not of any likely intelligence value).

• This scan is from a 1966 New York Times which reprinted it. Since it was done by Greenglass for the purposes of the Rosenberg case and is a piece of federal evidence, it is most likely in the public domain. Nobody has ever put a copyright notice on it in any case, to my knowledge.

	This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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