File:Gentleman Farm expanding base drill.jpeg
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Summary
| Description |
Expanding base drill recovered from the Gentleman Farm site, LaSalle County, Illinois, on the Illinois River |
|---|---|
| Source |
The Gentleman Farm Site, LaSalle County, Illinois, Illinois State Museum Reports of Investigations No. 12, Springfield, Illinois |
| Date |
1967 |
| Author |
Brown, James A. |
| Permission (Reusing this file) |
See below.
|
Licensing
 | This work is in the public domain because it was published in the United States between 1930 and 1977 inclusive, without a copyright notice. Unless the author has been dead for several years, it is not in the public domain in countries that do not apply the rule of the shorter term for US works. This includes Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, Switzerland, and other countries with individual treaties. See also further explanation. |  |
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