File:Call for lenses and optics for use in aeroplanes, U.S. Army, 1918.jpg
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Summary
| Description |
English: Call for lenses and optics for use in aeroplanes, U.S. Army, 1918. Advertisement in National Geographic to aid the war effort. |
| Date | |
| Source |
Original publication: Free advert offered to U.S. Army by National Geographic Society. |
| Author |
U.S. Army, Signal Equipment Nr. 33, Washington D.C. |
Licensing
|
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:22, 25 November 2012 | | 1,655 × 2,444 (1.99 MB) | Archivist2 | Uploading an old public-domain work using File Upload Wizard |
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