Institution
- PAMETRADA Research Station1
- PerSeptive Biosystem1
- Polytechnic Institute of Brooklyn1
- Princeton University2
- Principia College1
- Purdue University5
- Queen's College (University of Oxford)1
- Queen's University (Kingston, Ont.)1
- RCA Laboratories1
- Rijksuniversiteit te Utrecht1
- Robert College (Istanbul, Turkey)1
- Rockefeller University1
- Royal Canadian Air Force Auxiliary1
- Scientific Research Instruments Corporation1
- Sequenom Inc.1
- Socony-Vacuum Research Laboratories1
- Southwest Texas State University1
- Standard Oil Company1
- Standard Oil Company (Indiana)1
- Stanford Research Institute1