Encyclopaedia Britannica (1771–1860)
| Edition | Year | Vols | Articles | Cross-refs | Total | Treatises | Words | Avg Words |
|---|---|---|---|---|---|---|---|---|
| 1st Edition | 1771 | 2 | 7,721 | 1,614 | 9,335 | 42 | 1,760,147 | 227 |
| 2nd Edition | 1778 | 10 | 13,218 | 1,193 | 14,411 | 263 | 9,350,009 | 707 |
| 3rd Edition | 1797 | 18 | 16,017 | 1,292 | 17,309 | 507 | 15,999,831 | 998 |
| 4th Edition | 1810 | 20 | 16,858 | 2,286 | 19,144 | 500 | 17,641,664 | 1,046 |
| 1815 | 1815 | 20 | 16,946 | 2,242 | 19,188 | 457 | 17,357,973 | 1,024 |
| 6th Edition | 1823 | 21 | 15,000 | 2,108 | 17,108 | 494 | 17,526,334 | 1,168 |
| 7th Edition | 1842 | 21 | 15,818 | 339 | 16,157 | 602 | 19,173,464 | 1,212 |
| 8th Edition | 1860 | 21 | 12,781 | 655 | 13,436 | 647 | 21,230,370 | 1,661 |
| Total | 133 | 114,359 | 11,729 | 126,088 | 3,512 | 120,039,792 | 1,049 |