| Answer | Crossword Clue |
|---|---|
| EFGH | Forerunners of I |
| REAPERS | Forerunners of combines |
| CDS | Forerunners of MP3s |
| PAGERS | Forerunners of cellphones |
| HCARS | Forerunners of trolleys |
| TAPES | Forerunners of discs |
| BOMBS | Forerunners of missiles. |
| LPS | Forerunners of CDs |
| WHIGS | Forerunners of English Liberals. |
| PAAR | One of Leno's forerunners |
| ECUS | Forerunners of the euro |
| SLIDERULES | Forerunners of pocket calculators |
| PAAR | One of O'Brien's forerunners |
| PAAR | One of Fallon's forerunners |
| TAPES | Forerunners of CDs and DVDs |
