history | American Museum of Natural History | Natural History Museum | History | History (U.S. TV channel) | natural history | Field Museum of Natural History | History of China | National Museum of Natural History | The History Channel | Natural history | Jewish history | Swedish Museum of Natural History | Natural History | National Museum of American History | Carnegie Museum of Natural History | art history | AP United States History | History of Texas Tech University | The History of the Decline and Fall of the Roman Empire | oral history | History of the Jews in Germany | History Detectives | Black History Month | A History of the World in 100 Objects | History of India | History of the Jews in Poland | History of Bavaria | Washington County History & Landmarks Foundation | History (TV channel) |
With the help of other scholars during the 1930s, Langer completely revised the Epitome of History by German Scholar Karl Ploetz.