At Hoover there is extensive diversity of materials related to war, revolution, and peace during the 20th and 21st centuries. To enhance understanding of our collections by subjects and themes, please explore some of our collections highlight pages. You can also search our research guides which collect together lists of thematically related collections.
![Drawing of the exterior of a bookstore named Laissez Faire Books](/sites/default/files/content/paragraph/fellow-cards/2022-06/Business-Commerce-337x164.jpg)
![Three yellow triangles inside a black circle, all on a background of yellow - symbol used for fallout shelter](/sites/default/files/content/paragraph/fellow-cards/2022-06/Cold-War-337x164.jpg)
![Detail of a graphic from an early Russian Soviet book showing a five pointed star, and hammer and sickle all in black on white background](/sites/default/files/content/paragraph/fellow-cards/2022-06/communism-337x164-v2.jpg)
![Conservatism](/sites/default/files/content/paragraph/fellow-cards/2022-06/Conservatism-337x164.jpg)
![Black and white photo detail showing American and Japanese officials deliberating at the end of World War II](/sites/default/files/content/paragraph/fellow-cards/2022-06/diplomacy-337x164.jpg)
![detail of a black and white photo of exonomist Milton Friedman with the US Capitol building in the background](/sites/default/files/content/paragraph/fellow-cards/2022-06/econ-337x164.jpg)
![Detail of black and white photo of Edward Teller teaching in front of a blackboard](/sites/default/files/content/paragraph/fellow-cards/2022-06/education-337x164.jpg)
![detail of a black and white photo of Herbert Hoover](/sites/default/files/content/paragraph/fellow-cards/2022-06/Hoover-337x164.jpg)
![detail from Poster RU/SU 2321, a 1986 Russian poster titled Total'naia slezhka za inakomysliashchimi](/sites/default/files/content/paragraph/fellow-cards/2022-06/Inteligence-337x164.jpg)
![Journalists](/sites/default/files/content/paragraph/fellow-cards/2022-06/journalists.png)
![detail of poster US 3302, titled "Uphold the Flag of Zion" from the 1940s](/sites/default/files/content/paragraph/fellow-cards/2022-06/Jewish-337x164.jpg)
![detail from poster FR 876, titled "La Justice" from circa 1914](/sites/default/files/content/paragraph/fellow-cards/2022-06/law-337x164.jpg)
![Detail of poster US 715B, titled "Books wanted for our men in camp" from circa 1917](/sites/default/files/content/paragraph/fellow-cards/2022-06/Literature-337x164.jpg)
![Detail of poster US 2490, titled "I want you for U.S. Army" from 1917](/sites/default/files/content/paragraph/fellow-cards/2022-06/military-337x164_1.jpg)
![Detail of photograph of Nazi party elites](/sites/default/files/content/paragraph/fellow-cards/2022-06/nazism-337x164_0.jpg)
![detail or early 20th century peace symbol with rainbow on left side](/sites/default/files/content/paragraph/fellow-cards/2022-06/peace-337x164.jpg)
![Detail of propaganda poster](/sites/default/files/content/paragraph/fellow-cards/2022-06/propaganda-337x164b.jpg)
![Detail of color photo showing a man standing in front of radio soundboard, From the RFE/RL Corporate Records, 2000C71.197](/sites/default/files/content/paragraph/fellow-cards/2022-06/radio-337x164.jpg)
![Detail of a black and white photo showing some goods provided in relief by the ARA in Russia, including American Canned Milk](/sites/default/files/content/paragraph/fellow-cards/2022-06/releif-337x164.jpg)
![Detail of Poster FR 217, titled " Le laboratoire - l'usine - la guerre." from circa 1918](/sites/default/files/content/paragraph/fellow-cards/2022-06/science-337x164.jpg)
![Detail of poster INT 397, titled " Youth and students struggling" from 1975](/sites/default/files/content/paragraph/fellow-cards/2022-06/Student-337x164.jpg)
![Detail of black and white photo from the trenches of World War I, from the WWI Pictorial Collection (XX247)](/sites/default/files/content/paragraph/fellow-cards/2022-06/WWI-337x164.jpg)
![Detail from a color montage of World War II posters](/sites/default/files/content/paragraph/fellow-cards/2022-06/WWII-337x164.jpg)