![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-x-ray-demo-for-daughter-mabel-1902-si-neg-85-8778-750-inline-edit.jpg)
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 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
![Zestaw do malowania po numerach. "Koszyk z truskawką ©William Hammer" 40х50cm, KHO5662 - Ideyka | Sklep EMPIK.COM Zestaw do malowania po numerach. "Koszyk z truskawką ©William Hammer" 40х50cm, KHO5662 - Ideyka | Sklep EMPIK.COM](https://ecsmedia.pl/cdn-cgi/image/width=270,height=270,/c/zestaw-do-malowania-po-numerach-koszyk-z-truskawka-william-hammer-40h50cm-kho5662-b-iext129848687.jpg)
Zestaw do malowania po numerach. "Koszyk z truskawką ©William Hammer" 40х50cm, KHO5662 - Ideyka | Sklep EMPIK.COM
![Augustana College on X: "Did you know Augustana professor Dr. William Hammer discovered the Cryolophosaurus in Antarctica? You can explore this species at our Fryxell Geology Museum and it's also part of Augustana College on X: "Did you know Augustana professor Dr. William Hammer discovered the Cryolophosaurus in Antarctica? You can explore this species at our Fryxell Geology Museum and it's also part of](https://pbs.twimg.com/media/DgyXGE6WAAEZUHx.jpg)
Augustana College on X: "Did you know Augustana professor Dr. William Hammer discovered the Cryolophosaurus in Antarctica? You can explore this species at our Fryxell Geology Museum and it's also part of
![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-in-army-uniform-ww1-si-neg-85-408-750-inline-edit.jpg)
In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation
![William Hammer - Ölgemälde und Aquarelle des 19. Jahrhunderts 2017/12/05 - Prezzo realizzato: EUR 6.827 - Dorotheum William Hammer - Ölgemälde und Aquarelle des 19. Jahrhunderts 2017/12/05 - Prezzo realizzato: EUR 6.827 - Dorotheum](https://www.dorotheum.com/fileadmin/lot-images/38N171205/normal/william-hammer-a-202945.jpg)
William Hammer - Ölgemälde und Aquarelle des 19. Jahrhunderts 2017/12/05 - Prezzo realizzato: EUR 6.827 - Dorotheum
![Lot - William Hammer, (1821-1889 Danish), Basket of fruit still life, 1872, Oil on canvas laid to canvas, 24" H x 32.25" W Lot - William Hammer, (1821-1889 Danish), Basket of fruit still life, 1872, Oil on canvas laid to canvas, 24" H x 32.25" W](https://image.invaluable.com/housePhotos/johnmoran/40/645840/H0045-L174297760_original.jpg)