Subjects
- Cyclotrons1
- Depressions -- 1929 -- United States1
- Depressions -- 1929 -- United States -- Pictorial works1
- Diplomacy1
- Documentary films1
- Documentary films -- United States -- History and criticism1
- Documentary photography -- United States -- History -- 20th century1
- Drafts (documents)1
- Drawings (visual works)1
- Education1
- Electrical engineering -- United States1
- Engineering -- Study and teaching -- United States1
- Engineering schools1
- Engineering students1
- Foreign relations1
- Historical films1
- Industrial engineering1
- Journalists -- Interviews1
- Journalists -- United States1
- Laboratory notebooks2