| Answer | Crossword Clue |
|---|---|
| OCTAVOS | Books in which each sheet of paper is folded into eight leaves |
| endpaper | sheet of paper, often distinctively colored or ornamented, folded vertically once to form two leaves, one of which is pasted flat to the inside of the front or back cover of a book, with the other pasted to the inside edge of the first or last page to for |
| obvolute | noting or pertaining to a vernation in which two leaves are folded together in the bud so that one half of each is exterior and the other interior |
