| Answer | Crossword Clue |
|---|---|
| ERA | Period in a historian's book |
| NOONTIME | Dark period in a Koestler book |
| overdue | (of a library book) Retained longer than the period allowed |
| borrow | Take and use (a book) from a library for a fixed period of time |
| borrowed | Take and use (a book) from a library for a fixed period of time |
| ERA | Period for historians |
