![Closeup of an old wooden mallet or hammer, made in Italy, 19th century. Isolated on white background with reflections Stock Photo - Alamy Closeup of an old wooden mallet or hammer, made in Italy, 19th century. Isolated on white background with reflections Stock Photo - Alamy](https://c8.alamy.com/comp/2DXR6J5/closeup-of-an-old-wooden-mallet-or-hammer-made-in-italy-19th-century-isolated-on-white-background-with-reflections-2DXR6J5.jpg)
Closeup of an old wooden mallet or hammer, made in Italy, 19th century. Isolated on white background with reflections Stock Photo - Alamy
![In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation](https://invention.si.edu/sites/default/files/inventors-hammer-william-ac0069-0000017-sepia-teaser-edit.jpg)
In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation
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