| Answer | Crossword Clue |
|---|---|
| addenda | appendix to a book |
| append | add as a supplement or appendix (as in a book) |
| excursuses | A detailed discussion of a particular point in a book, usually in an appendix |
| excursus | A detailed discussion of a particular point in a book, usually in an appendix |
| ADDENDUM | Book appendix |
| INDEX | Common book appendix |
