| Answer | Crossword Clue |
|---|---|
| DEWEY | Library system pioneer |
| DEWEY | American library pioneer. |
| DEWEY | Library science pioneer |
| CARDCATALOG | Outmoded library system |
| PUTNAM | Inventor of the Library of Congress classification system |
| ATARI | Video game system pioneer |
| DELCO | Car battery ignition system pioneer |
