Related Clues:
- See 21-Down
- Last word in the Pledge of Allegiance
- It's this or nothing!
- Generation
- Historical time to remember
- See 40-Down
- It contains periods
- Big time
- Significant time period
- Prohibition, e.g.
- Coldwell Banker competitor
- Silent ___ (time before the talkies)
- With 43-Across, sane
- An earlier one may be recalled
- Paleozoic, for one