| 100% | DDT | 3 | Subject of Rachel Carson book |
| 61% | SEA | 3 | Subject of the trilogy penned by Rachel Carson before she wrote "Silent Spring" |
| 54% | SEA | 3 | Rachel Carson subject |
| 54% | DDT | 3 | Rachel Carson subject |
| 52% | DDT | 3 | Subj. of Rachel Carson's "Silent Spring" |
| 52% | HISS | 4 | Subject of the book "Perjury" |
| 51% | DDT | 3 | One target of Rachel Carson's "Silent Spring" |
| 51% | WISDOM | 6 | Subject of the Book of Proverbs |
| 51% | EARHART | 7 | Subject of the book "Last Flight" |
| 50% | EDSEL | 5 | Subject of the book "Disaster in Dearborn" |
| 50% | SPUTNIK | 7 | Subject of the book "Red Moon Rising" |
| 50% | ART | 3 | Subject of many a coffee table book |
| 50% | ASEXUALITY | 10 | Subject of the Angela Chen book "Ace" |
| 49% | IRS | 3 | Subject of the book "Many Unhappy Returns": Abbr. |
| 49% | DDAY | 4 | Subject of the book "Six Armies in Normandy" |
| 49% | ABBAS | 5 | Subject of the book ''The Last Palestinian'' (2017) |
| 49% | PLO | 3 | Subject of the book ''One Land, Two Peoples'' |
| 49% | MACINTOSH | 9 | Subject of the book "Revolution in the Valley" |
| 49% | KENKESEY | 8 | Subject of an early Tom Wolfe book (1968) |
| 49% | SCRABBLE | 8 | Subject of Stefan Fatsis' book "Word Freak" |
| 49% | CIA | 3 | Subject of the 2007 book "Sabotage" |
| 48% | ALVINAILEY | 10 | Subject of the 2004 book "Dancing Revelations" |
| 48% | PALIN | 5 | Subject of the 2011 book "The Rogue" |
| 48% | ENRON | 5 | Subject of the 2003 book "Power Failure" |
| 48% | ABCS | 4 | Subject of a book that goes from apple to zebra |
| 47% | ENRON | 5 | Subject of the 2005 book "Conspiracy of Fools" |
| 47% | AMES | 4 | Subject of the 2012 book "Circle of Treason" |
| 47% | ENRON | 5 | Subject of the 2002 book “Anatomy of Greed” |
| 47% | EBAY | 4 | Subject of the 2002 book "The Perfect Store" |
| 47% | FRANKLIN | 8 | Rosalind, subject of The Dark Lady of DNA book |