| Nolan Ryan stat | 15 |
| Mayan or Mundane | 16 |
| Major stretch | 13 |
| Major division of geological time | 33 |
| Long division? | 14 |
| Important time span | 19 |
| Important stretch | 17 |
| Important historical time | 25 |
| History topic | 13 |
| Historical topic | 16 |
| Historic age | 12 |
| Guidry stat. | 12 |
| Good Feelings, for one | 22 |
| Geologic timespan | 17 |
| Gay Nineties, e.g. | 18 |
| Gaslight, e.g. | 14 |
| Feminists' goal | 19 |
| Fab competitor | 14 |
| Eventful period | 15 |
| Eon part | 8 |
| Eon division | 12 |
| Elizabethan, for one | 20 |
| Elizabethan or Gaslight | 23 |
| Don Larsen stat | 15 |
| Distinctive stretch | 19 |
| Disco, for one | 14 |
| Classical ___ | 13 |
| Chronology segment | 18 |
| Century 21 alternative | 22 |
| Category in pitching's Triple Crown | 39 |
| Bygone cause | 12 |
| Big Band, e.g. | 14 |
| Baseball statistic: Abbr. | 25 |
| An objective of NOW | 19 |
| All rival | 9 |
| '70s NOW cause | 18 |
| ___ of Good Feelings, 1817-25 | 29 |
| __ of Good Feelings | 19 |
| Word with ''Big Band'' or ''Reagan'' | 68 |
| Word after many presidents' names | 37 |
| Wisk rival | 10 |
| Victorian or Edwardian | 22 |
| Two or more periods | 19 |
| Titled time | 11 |
| Timeline time | 13 |
| Timeline slice | 14 |
| Timeline chunk | 14 |
| Time-line span | 14 |
| Time worth noting | 17 |
| Time on earth | 13 |
| Time of importance | 18 |
| Time interval | 13 |
| The Thatcher years, e.g., in Britain | 36 |
| The modern, for one | 19 |
| The Golden Age of Television, for one | 37 |
| The end of an ___ | 17 |
| The dead-ball ___ | 17 |
| The Clinton years, e.g. | 23 |
| The Cenozoic, e.g. | 18 |
| The "E" in B.C.E. | 27 |
| Swing or Mesozoic, e.g. | 23 |
| Swing or Big Band | 17 |
| Swing ___ (1920s-30s) | 21 |
| Stretch named for a leader, perhaps | 35 |
| Stat that's good when it's low | 38 |
| Stat that is better when lower | 30 |
| Stat for Seaver | 15 |
| Stat for pitchers | 17 |
| Stat for Mariano Rivera | 23 |
| Stat for Koufax | 15 |
| Stat for hurlers | 16 |
| Stat for Gossage | 16 |
| Stat for Cliff Lee | 18 |
| Stat for Clayton Kershaw | 24 |
| Stat for a hurler | 17 |
| Sports stat that's best when low | 36 |
| Specific span of history | 24 |
| Special period of history | 25 |
| Significant period of time | 26 |
| Sandy Koufax stat | 17 |
| Ruth's was 2.28 | 19 |
| Roaring Twenties, e.g. | 22 |
| Reconstruction, e.g. | 20 |
| Reagan-___ | 10 |
| Reagan or Christian | 19 |
| Reagan __ | 9 |
| Proposed amendment, for short | 29 |
| Prohibition __ | 14 |
| Progressive ___ | 15 |
| Procter & Gamble's first liquid laundry detergent | 57 |
| Pretty big stretch? | 19 |
| Pitching data: Abbr. | 20 |
| Pitcher's stat, for short | 29 |
| Pitcher's record: Abbr. | 27 |
| Pitcher's no. | 17 |
| Period with a name | 18 |
| Period relative | 15 |
| Period in a historian's book | 32 |
| Pedro Martinez stat | 19 |
| Particular period of history | 28 |