| 1 (76) | United States Department of Agriculture | USA |  |
| 2 (131) | Lawrence Berkeley National Laboratory | USA | |
| 3 (222) | National Aeronautics and Space Administration * | USA | |
| 4 (269) | U.S. Army | USA | |
| 5 (365) | National Center for Biotechnology Information | USA | |
| 6 (386) | Doe Joint Genome Institute | USA | |
| 7 (396) | Oak Ridge National Laboratory | USA | |
| 8 (422) | National Institute of Standards and Technology * | USA | |
| 9 (423) | Los Alamos National Laboratory | USA | |
| 10 (496) | Argonne National Laboratory | USA | |
| 11 (501) | National Renewable Energy Laboratory | USA | |
| 12 (518) | U.S. Food and Drug Administration | USA | |
| 13 (527) | Pacific Northwest National Laboratory | USA | |
| 14 (533) | Lawrence Livermore National Laboratory | USA | |
| 15 (568) | Sandia National Laboratories, New Mexico | USA | |
| 16 (605) | US Naval Research Laboratory | USA | |
| 17 (741) | U.S. Air Force | USA | |
| 18 (819) | Brookhaven National Laboratory | USA | |
| 19 (854) | National Oceanic and Atmospheric Administration | USA | |
| 20 (858) | United States Geological Survey | USA | |
| 21 (876) | Jet Propulsion Laboratory | USA | |
| 22 (1007) | US Environmental Protection Agency | USA | |
| 23 (1008) | National Center for Atmospheric Research | USA | |
| 24 (1080) | Smithsonian Institution | USA | |
| 25 (1101) | NASA Goddard Space Flight Center | USA | |
| 26 (1324) | Ames Laboratory | USA | |
| 27 (1350) | Armed Forces Institute of Pathology | USA | |
| 28 (1383) | U.S. Department of Energy | USA | |
| 29 (1412) | National High Magnetic Field Laboratory | USA | |
| 30 (1415) | SLAC National Accelerator Laboratory | USA | |
| 31 (1496) | National Energy Technology Laboratory | USA | |
| 32 (1607) | NASA Ames Research Center | USA | |
| 33 (1631) | Joint Quantum Institute | USA | |
| 34 (1661) | University of Maryland, Center for Environmental Science | USA | |
| 35 (1733) | World Bank United States | USA | |
| 36 (1828) | NASA Langley Research Center | USA | |
| 37 (1949) | NASA Goddard Institute for Space Studies | USA | |
| 38 (2019) | Nemours A Children's Health System | USA | |
| 39 (2075) | American Museum of Natural History | USA | |
| 40 (2113) | Fermi National Accelerator Laboratory | USA | |
| 41 (2123) | Space Telescope Science Institute | USA | |
| 42 (2437) | Princeton Plasma Physics Laboratory | USA | |
| 43 (2457) | National Optical Astronomy Observatory | USA | |
| 44 (2482) | Spitzer Science Center | USA | |
| 45 (2572) | Idaho National Laboratory | USA | |
| 46 (2650) | Joint Institute for Laboratory Astrophysics | USA | |
| 47 (2756) | NASA Stennis Space Center | USA | |
| 48 (2759) | Thomas Jefferson National Accelerator Facility | USA | |
| 49 (2835) | Field Museum Natural History | USA | |
| 50 (2912) | Naval Air Systems Command | USA | |
| 51 (3064) | National Radio Astronomy Observatory, Charlottesville | USA | |
| 52 (3078) | Glenn Research Center | USA | |
| 53 (3142) | Infrared Processing and Analysis Center | USA | |
| 54 (3145) | US National Science Foundation | USA | |
| 55 (3382) | NASA Johnson Space Center | USA | |
| 56 (3477) | National Radio Astronomy Observatory, Socorro | USA | |
| 57 (3805) | NASA Marshall Space Flight Center | USA | |
| 58 (4008) | Federal Aviation Administration | USA | |
| 59 (4119) | Savannah River National Laboratory | USA | |
| 60 (4223) | NASA Kennedy Space Center | USA | |
| 61 (4268) | United States Fish and Wildlife Service | USA | |
| 62 (4399) | Missouri Botanical Garden | USA | |
| 63 (4887) | Nuclear Regulatory Commission | USA | |
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