PBS
Pbs American Experience: Race for the Superbomb
This site explores the Cold War race to develop the hydrogen bomb, a weapon that would change the world. Content details all the people who were involved in the race for the H-Bomb, as well as notable events during this time period....
Other
The Weekly South Dakotan: South Dakota History for 4th Grade
From the very beginning and through the twentieth century, this comprehensive collection of lessons will enrich students studying the history in between and the effects on South Dakota.