| Things to crack | 15 |
| Secret writings | 15 |
| Ciphers | 7 |
| They may be cracked | 19 |
| Secret messages | 15 |
| They're sometimes cracked | 29 |
| Area and zip | 12 |
| Morse and others | 16 |
| Cryptography topic | 18 |
| Cryptographers' creations | 29 |
| Works on a program | 18 |
| Things broken by the C.I.A. | 27 |
| Systems of signals | 18 |
| Systems of rules | 16 |
| Some are made of bars | 21 |
| Sets of regulations | 19 |
| Sets of principles | 18 |
| Secret languages | 16 |
| Secret communications | 21 |
| Regulations for builders | 24 |
| Protocols | 9 |
| Programmers' output | 23 |
| Prepares punch cards | 20 |
| Penal and Napoleonic | 20 |
| Morse et al. | 12 |
| Morse and zip, e.g. | 19 |
| Morse and zip | 13 |
| Morse and area | 14 |
| Message systems | 15 |
| Legacies of Morse and Hammurabi | 31 |
| Kin of ciphers | 14 |
| Hides the meaning | 17 |
| Features of secret messages | 27 |
| Encrypts | 8 |
| Encryptions | 11 |
| Does some computer programming | 30 |
| Disguises the meaning | 21 |
| Cryptography topics | 19 |
| Cryptographer's study | 25 |
| Cryptographer's creations | 29 |
| Crackers may be used on them | 28 |
| Computer programmers' expertise | 35 |
| Buildings often have them | 25 |
| "One if by land, two if by sea" and others | 52 |
| Ancient manuscript | 18 |
| Manuscript volume | 17 |
| Quire of manuscript pages | 25 |
| Old manuscript | 14 |
| Ancient volume | 14 |
| Ancient tome | 12 |
| Ancient book | 12 |
| Scrolls successor | 17 |
| Scriptures volume | 17 |
| Scriptures manuscript | 21 |
| Scriptural book | 15 |
| Predecessor of the modern book | 30 |
| Monastery manuscript | 20 |
| Manuscript book | 15 |
| Leonardo manuscript, say | 24 |
| Handwritten book | 16 |
| Early book form | 15 |
| Classical manuscript | 20 |
| Book of Kells, e.g. | 19 |
| Book form that replaced the scroll | 34 |
| Antique manuscript | 18 |
| Ancient manuscript volume | 25 |
| 1980 Preakness winner | 21 |
| Supplement that some claim eases arthritis | 42 |
| Fish-derived supplement | 23 |
| (Mark Kurlansky, 1997) Supplement that some claim eases arthritis (Upton Sinclair, 1927) | 88 |
| Food fishes | 11 |
| Some UPS deliveries | 19 |
| North Atlantic food fishes | 26 |
| Atlantic catches | 16 |
| New England catches | 19 |
| Pkgs. to pay for | 16 |
| Atlantic swimmers | 17 |
| Whiting or haddock | 18 |
| Whiting and haddock | 19 |
| UPS deliveries requiring payment | 32 |
| They come with balances due | 27 |
| Soft-rayed food fishes | 22 |
| Seafood fishes | 14 |
| Relatives of pollocks | 21 |
| Relatives of pollacks | 21 |
| Pollacks' kin | 17 |
| Packages to pay for | 19 |
| Omega-3 sources | 15 |
| New England food staples | 24 |
| Haddock relatives | 17 |
| Fish and Cape | 13 |
| Cousins of haddocks | 19 |
| Cold-water fishes | 17 |
| Certain packages | 16 |
| Cape ___ (saltbox homes) | 24 |
| Buffalo Bill | 12 |
| Buffalo Bill's surname | 26 |
| Wild West showman | 17 |
| Buffalo Bill's last name | 28 |
| Buffalo Bill, formally | 22 |