| Divine occurrences |
| Interesting historical periods |
| Arab Spring occurrences |
| Historical meeting places |
| Prehistoric implement |
| Prehistoric creature |
| Term for a presidential period, historically |
| Historical chapters |
| Either of a historic PGA pair? |
| Absurd occurrences |
| Historic spans |
| Serendipitous occurrences |
| Notable historical spans |
| Headline occurrences |
| Historic records |
| Amount of land a pair of oxen could plow in a day, historically |
| Historical novelist Seton |
| Historical interval |
| Phooey on that prehistorically set comic strip! |
| 1978 novelty hit based on a historical person |
| Historic grp. |
| Jackie Robinson, historically |
| He's Terrible, historically |
| Speakeasy occurrences |
| Historically, he was terrible |
| Historical Dead Sea region |
| Historic NASA missions |
| Alternative to vernacular, historically |
| Historic segments |
| Person who's ready and able to help ... or a literal description of four occurrences in this puzzle |