Image:Gravity Aeroplane cyclogyro letterhead.png
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Letterhead image from Gravity Aeroplane's stationary, dating to 1928. PD under Pre-1978, as the original includes no copyright notice. From the web page at http://www.scripophily.net/graecone19.html
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This work is in the public domain in the United States because it was first published in the United States without copyright notice prior to 1978, which causes the work to be irrevocably in the Public Domain. See Copyright. |  |
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 12:37, 1 November 2007 | 298×199 (20 KB) | Maury Markowitz (Talk | contribs) | (Letterhead image from Gravity Aeroplane's stationary, dating to 1928. PD under Pre-1978, as the original includes no copyright notice. From the web page at http://www.scripophily.net/graecone19.html {{PD-Pre1978} ) |
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