| Mayan, e.g. | 11 |
| Marked period | 13 |
| Mariano Rivera stat that is 0.71 for the post-season | 52 |
| Low stat for Frank Viola | 24 |
| Low no. for Roger Clemens | 25 |
| Low no. for an All-Star starter | 31 |
| Low fig. for Randy Johnson | 26 |
| Lost cause for NOW? | 19 |
| Longish stretch | 15 |
| Long-time NOW cause | 19 |
| Long reign, say | 15 |
| Long reign, e.g. | 16 |
| Live-ball ___ | 13 |
| Little bit of history | 21 |
| Levenson's "In One ___ . . . " | 44 |
| Letters for equality | 20 |
| Legislation recently re-introduced by Edward Kennedy and Carolyn Maloney: Abbr. | 79 |
| Legislation backed by N.O.W. | 28 |
| Legis. proposed by Alice Paul | 29 |
| Legis. introduced into every session of Congress from 1923 to 1970 | 66 |
| Laundry day brand | 17 |
| Koufax's was 2.76 | 21 |
| Koufax stat. | 12 |
| Koji Uehara stat | 16 |
| K's lower it | 16 |
| Jurassic, for one | 17 |
| Julian or Varro | 15 |
| Juan Marichal's was 2.89 | 28 |
| Jazz or Bronze | 14 |
| Its end is often observed | 25 |
| It's urged by NOW | 21 |
| It's low for aces: Abbr. | 28 |
| It's good to have a low one on the hill | 43 |
| It's backed by NOW | 22 |
| It's amazing if it's under 2 | 36 |
| It would, at last, make the Constitution discuss sex | 52 |
| It may end in -zoic | 19 |
| It may contain periods | 22 |
| It goes up with a HR | 20 |
| It goes down with a shutout | 27 |
| It contains periods | 19 |
| Influential time period | 23 |
| Influential time | 16 |
| Influential interval | 20 |
| In baseball, a good one is low | 30 |
| Important time, historically | 28 |
| Important time period | 21 |
| Important time in music | 23 |
| Important stat to a pitching coach | 34 |
| Important span of time | 22 |
| Important span | 14 |
| Important period of history | 27 |
| Important period in history | 27 |
| Important part of history | 25 |
| Important interval | 18 |
| Ill-fated 27th Amendment | 24 |
| Iffy Const. amendment | 21 |
| Identifiable time | 17 |
| Identifiable period | 19 |
| HurlerÂ’s stat. | 18 |
| Hurler's no. | 16 |
| Hurler's figure | 19 |
| Horse-and-buggy, e.g. | 21 |
| Hoped-for low number: Abbr. | 27 |
| History text topic | 18 |
| History stretch | 15 |
| History section | 15 |
| History class syllabus division | 31 |
| History class division | 22 |
| History book discussion, perhaps | 32 |
| History book discussion | 23 |
| Historically low number for Mariano Rivera | 42 |
| Historical timeline section | 27 |
| Historical time in music | 24 |
| Historical time division | 24 |
| Historical interval | 19 |
| Historical division | 19 |
| Historical age | 14 |
| Historic timespan | 17 |
| Historic period of note | 23 |
| Historic interval | 17 |
| Historian's specialty, perhaps | 34 |
| Historian's specialty | 25 |
| Group of periods | 16 |
| Group of memorable yesterdays | 29 |
| Greek or Roman | 14 |
| Gooden stat | 11 |
| Good thing to keep low on a diamond | 35 |
| Good fig. for Maddux or Martinez | 32 |
| Good Feelings time? | 19 |
| Good Feeling, e.g. | 18 |
| Good feeling time? | 18 |
| Goal for many feminists (abbr.) | 31 |
| Giving up a homer increases it | 30 |
| Gilded Age, e.g. | 16 |
| Geologist's time division | 29 |
| Geologist's time | 20 |
| Geologist's span | 20 |
| Geologic time span | 18 |
| Geologic time frame | 19 |