| Answer | Crossword Clue |
|---|---|
| NSA | Org. that's the subject of the book "The Puzzle Palace" |
| NSA | Org. that's the subject of the book "Body of Secrets" |
| ESSEX | Whaleship that's the subject of the book "In the Heart of the Sea" |
| NSA | Subj. of the book "The Puzzle Palace" |
