Creator
- Tournois, E.1
- Tower, Samuel Francis1
- Trease, George Edward, 1902-1
- Trillich, Heinrich1
- Trow, Joseph F.1
- Tungsten Institute1
- Turnbull, Laurence, 1821-19001
- Tyler, Marguerite Griffith, b. 18811
- Ullstein GmbH1
- Unesma1
- Union Carbide and Carbon Corporation1
- United States. Agricultural Research Service. Crops Research Division1
- United States. Bureau of Chemistry1
- United States. Congress1
- United States. Department of Commerce1
- United States. Department of Labor1
- United States. National Aeronautics and Space Administration1
- United States. Office of Education1
- United States. Office of the Assistant Secretary for Nuclear Energy1
- United States. War Department1