Institution
- Shell Chemical Company2
- Sierra Monitor Corporation2
- Smith College2
- Smithsonian Institution2
- St. Louis University2
- Standard Oil Company (Indiana)2
- Standard Oil Company (Ohio)2
- Stanford Research Institute2
- Stanford University. Medical Center2
- Stevens Institute of Technology2
- Technische Universität München2
- The Scientist, LLC2
- Think Outside, Inc. 2
- Trinity College (Dublin, Ireland)2
- Tufts-New England Medical Center2
- Tulane University2
- Tuskegee University2
- Ṭekhniyon, Makhon ṭekhnologi le-Yiśraʼel2
- U.S. Atomic Energy Commission2
- U.S. Consumer Product Safety Commission2