National History Day (NHD)
Every year National History Day frames students’ research within a historical theme. The theme is chosen for the broad application to world, national, or state history and its relevance to ancient history or to the more recent past. The 2019-2020 theme is Breaking Barriers in History.
National History Day Student Resources - Official NHD webpage
Smithsonian Institution (Research includes the National Museum of African American History and Culture, National Museum of the American Indian, National Air and Space Museum, National Museum of American History, Smithsonian American Art Museum, the National Zoo and others)