| 01 | Merriam-Webster Collegiate Dictionary | 71.0 |
| 02 | The Chicago Manual of Style | 64.1 |
| 03 | National Geographic Atlas of the World | 56.4 |
| 04 | Roget's Thesaurus | 51.8 |
| 05 | The Joy of Cooking | 50.9 |
| 06 | The Merck Manual of Diagnosis and Therapy | 50.0 |
| 07 | Garner’s Modern English Usage | 45.9 |
| 08 | The Oxford English Dictionary | 42.2 |
| 09 | The World Almanac and Book of Facts | 41.4 |
| 10 | The Elements of Style | 41.0 |
| 11 | Reader’s Digest Complete Do-it-Yourself Manual | 37.3 |
| 12 | Bartlett's Familiar Quotations | 35.0 |
| 13 | The Sibley Guide to Birds | 33.8 |
| 14 | Merriam-Webster’s Collegiate Thesaurus | 31.5 |
| 15 | The Times Comprehensive Atlas of the World | 28.9 |
| 16 | Mayo Clinic First-Aid Guide for Outdoor Adventures | 23.1 |
| 17 | The Family Handyman Whole House Repair Guide | 21.5 |
| 18 | The Complete Guide to Home Wiring | 21.5 |
| 19 | The Food Lab | 21.0 |
| 20 | The Well-Tempered Garden | 20.5 |
| 21 | The Oxford History of the United States | 19.7 |
| 22 | The Oxford Dictionary of World Religions | 19.4 |
| 23 | The Oxford Companion to World Mythology | 19.4 |
| 24 | On Food and Cooking: The Science and Lore of the Kitchen by Harold McGee | 18.1 |
| 25 | The Flavor Bible by Karen Page & Andrew Dornenburg | 17.1 |
| 26 | Salt, Fat, Acid, Heat (Samin Nosrat) | 16.3 |
| 27 | Encyclopaedia Britannica | 16.3 |
| 28 | SAS Survival Handbook by John "Lofty" Wiseman | 15.2 |
| 29 | The Encyclopedia of Country Living by Carla Emery | 14.8 |
| 30 | The Foxfire Book series | 14.8 |