Subject
- Hochwalt, Carroll A., 1900-19871
- Hooker, Samuel Cox, 1864-19351
- Hormones1
- Hydrogenation1
- Hydrogenation--Research1
- Indigo1
- Internal combustion engines1
- Ittner, Martin Hill, 1870-19451
- Johns Hopkins University1
- Manufacturing industries1
- Marshall, Albert Edward, 1883-1
- Medical education1
- Mendeleyev, Dmitry Ivanovich, 1834-19071
- Metallurgy1
- Midgley, Thomas, 1889-19441
- Monsanto Company1
- Nonnutritive sweeteners1
- Nylon1
- Oenslager, George, 1873-19561
- Ott, Isaac, 1847-19161