File:Jonas Salk signature.svg
| Description | Signature of Jonas Salk |
| Date | Unknown dateCategory:Unknown date |
| Source | Heritage Auctions |
| Author |
Jonas Salk Created in vector format by Scewing |
| Other versions | http://historical.ha.com/common/view_item.php?Sale_No=6054&Lot_No=34690 |
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This signature is believed to be ineligible for copyright and therefore in the public domain because it falls below the required level of originality for copyright protection both in the United States and in the source country (if different). In this case, the source country (e.g. the country of nationality of the signatory) is believed to be United States.
Note that this tag cannot be used on all signatures, as not all signatures are copyright-free.
See Commons:When to use the PD-signature tag for an explanation of when the tag may be used. |