| 100% | EMU | 3 | Bird which became extinct in Tasmania in the mid-19th century |
| 53% | EGRET | 5 | Bird that became endangered in the 19th and early 20th century due to demands from hat makers |
| 48% | DODOS | 5 | Flightless birds that became extinct in the 1600s |
| 47% | DODO | 4 | Bird that went extinct in the 17th century |
| 45% | AUK | 3 | "Great" North Atlantic bird that became extinct in the 1850's according the IUCN |
| 40% | CAMORRA | 7 | Criminal secret society originating in Naples in the early 19th century |
| 38% | DODO | 4 | Bird that went extinct in the 1600s |
| 38% | OSLO | 4 | Scandinavian capital founded in the mid-11th century |
| 36% | DODO | 4 | Bird extinct since the late 17th century |
| 36% | ERE | 3 | "Before," in the 19th century |
| 36% | THREECENTPIECES | 15 | Lightest coins ever minted by the U.S., used in the late 19th century |
| 36% | DUN | 3 | ___ Laoghaire, originally constructed as a port to serve Dublin in the early 19th century |
| 36% | ICE | 3 | ___ hockey, Winter Olympic sport in which two teams use sticks to shoot a rubber puck and was first played in the 19th century |
| 36% | CORGARFF | 8 | — Castle, medieval tower house in Aberdeenshire built in the mid-16th century |
| 36% | IRONHORSES | 10 | Steam trains, in the 19th century |
| 36% | ARC | 3 | Type of lamp using carbon electrodes invented by Humphry Davy in the early 19th century |
| 35% | RISORGIMENTO | 12 | Movement for the political unification of Italy in the 19th century |
| 35% | SLAVETRADE | 10 | It was outlawed in the 19th century |
| 35% | WILDWEST | 8 | US frontier period in the 19th century |
| 35% | MORPHINE | 8 | Potent painkiller common in the 19th century |
| 35% | DDE | 3 | Last pres. born in the 19th century |
| 35% | BOSC | 4 | Pear named after a professor of the Paris Jardin des plantes in the early 19th century |
| 35% | MERINOS | 7 | Type of sheep raised for wool in Vermont in the early 19th century until about 1840, when Vermont sheep-raising collapsed |
| 35% | EMU | 3 | The Tasmanian one has been extinct since the 19th century |
| 35% | DODO | 4 | Extinct bird which used to roam the island of Mauritius |
| 35% | TSHIRTS | 7 | Attire that developed from miners' duds in the 19th century |
| 35% | ODE | 3 | Type of poem popular in the 19th century |
| 35% | WELLSFARGO | 10 | Pioneer mail courier and banking service that operated in the western US from the mid-19th century |
| 35% | GEORGEPEABODY | 13 | 19th-century research library in Baltimore which was funded by the father of modern philanthropy: 2 wds. |
| 35% | VOLLEYBALL | 10 | Ball game invented by William G Morgan whose original name in the late 19th century was Mintonette |