Edition All editions 1st · 1768–71 2nd · 1777–84 3rd · 1788–97 Supp. to 3rd 4th · 1801–10 5th · 1815–17 6th · 1820–23 Supp. to 4–6th 7th · 1830–42 8th · 1853–60 9th · 1875–89 10th · 1902–03 11th · 1910–11 12th · 1922 13th · 1926 14th · 1929 Years – Plates only Order As bound Oldest first Newest first Most illustrated Fewest words