| 1 (17) | National Aeronautics and Space Administration * | USA |  |
| 2 (22) | United States Geological Survey | USA | |
| 3 (26) | United States Department of Agriculture | USA | |
| 4 (28) | NASA Goddard Space Flight Center | USA | |
| 5 (30) | National Oceanic and Atmospheric Administration | USA | |
| 6 (33) | Jet Propulsion Laboratory | USA | |
| 7 (196) | National Center for Atmospheric Research | USA | |
| 8 (216) | Lawrence Livermore National Laboratory * | USA | |
| 9 (321) | Smithsonian Institution * | USA | |
| 10 (365) | Lawrence Berkeley National Laboratory * | USA | |
| 11 (465) | American Museum of Natural History | USA | |
| 12 (536) | Smithsonian National Museum of Natural History | USA | |
| 13 (647) | Pacific Northwest National Laboratory * | USA | |
| 14 (786) | Los Alamos National Laboratory * | USA | |
| 15 (1056) | U.S. Army * | USA | |
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