| Answer | Crossword Clue |
|---|---|
| POSITRON | Antiparticle first observed in 1929 |
| ARBOR | ... Day, first observed in 1872. |
| NEPTUNE | It was first observed in 1846 |
| THANKSGIVING | National day of gratitude, first observed by the Pilgrims in 1621 |
| LOU | First Lady in 1929 |
| OSCARS | Statuettes first awarded in 1929 |
| EMILJANNINGS | Winner in 1929 of the first Academy Award for Best Actor |
| OTT | National Leaguer who was ranked first, second, or third in walks every year from 1929 to 1944 |
