| MIT and RPI |
| Tech. schools |
| MIT and others |
| Sci. facilities |
| MIT and Brookings |
| R&D locales: Abbr. |
| Schools for engrs. |
| Schools like Cal Tech |
| Horns and oboes: Abbr. |
| M.I.T., R.P.I., et al. |
| Research facilities: Abbr. |
| Schools for would-be engrs. |
| Schools like Cal Tech (abbr.) |
| Some research facilities (abbr.) |