Date Sort descending | Image | Innovation | Society |
---|---|---|---|
1842 | The Cincinnati Observatory | AIAA | |
1873 | Cincinnati Observatory | AIAA | |
1897 | Chivilingo Hydroelectric Plant | IEEE |
Date Sort descending | Image | Innovation | Society |
---|---|---|---|
1842 | The Cincinnati Observatory | AIAA | |
1873 | Cincinnati Observatory | AIAA | |
1897 | Chivilingo Hydroelectric Plant | IEEE |