| 100% | TSHIRTS | 7 | Attire that developed from miners' duds in the 19th century |
| 44% | EGRET | 5 | Bird that became endangered in the 19th and early 20th century due to demands from hat makers |
| 41% | ODE | 3 | Type of poem that was popular in the 19th century |
| 41% | ERIE | 4 | New York canal that was built in the 19th century |
| 40% | ERE | 3 | "Before," in the 19th century |
| 40% | IRONHORSES | 10 | Steam trains, in the 19th century |
| 39% | SLAVETRADE | 10 | It was outlawed in the 19th century |
| 39% | WILDWEST | 8 | US frontier period in the 19th century |
| 39% | MORPHINE | 8 | Potent painkiller common in the 19th century |
| 39% | DDE | 3 | Last pres. born in the 19th century |
| 39% | ODE | 3 | Type of poem popular in the 19th century |
| 39% | ARCDETRIOMPHE | 13 | Paris landmark built in the 19th century (3 wds.) |
| 39% | UNIONSUIT | 9 | Long, one-piece underwear worn in the 19th century |
| 38% | LOG | 3 | Yule ___, traditional Christmas dessert that originated in the 19th century |
| 38% | PENNYFARTHING | 13 | Bicycle from the 19th century that had a large front wheel and a small rear wheel: Hyph. |
| 37% | BAHAI | 5 | Monotheistic religious system founded in the 19th century by Baha'u'llah |
| 37% | CAPE | 4 | Attire that flaps in the wind |
| 37% | TANDEM | 6 | Type of bicycle from the 19th century that is built for two or more riders |
| 35% | USA | 3 | Country that broke away from England in the 18th century: Abbr. |
| 35% | TELEGRAPH | 9 | Electrical ___, industrial revolution invention that modernized communication in the 19th century |
| 35% | RENAISSANCE | 11 | Art movement that originated in Europe between 14th and 17th century marking the transition from the middle ages to modernity |
| 35% | MALTESE | 7 | Language that developed from an Arabic dialect, yet uses the Roman alphabet |
| 35% | PJS | 3 | Attire that may include covering for the feet, in brief |
| 34% | LIGHTBULB | 9 | Notable invention from the 19th century, that brought steady light to households, and stands as a symbol of an idea: 2 wds. |
| 34% | OZONE | 5 | Layer in the atmosphere that famously developed a "hole" |
| 34% | JANISSARY | 9 | Turkish infantry guard in the 14th to 19th century |
| 34% | MUCUS | 5 | Layer in the stomach that protects from 1-Across |
| 34% | ELIHU | 5 | Politician ___ Washburne of the 19th century, who was prominent in founding the Republican Party |
| 34% | SURREALISM | 10 | Movement in art and literature in the 1920s that developed from dadaism |
| 34% | WELLSFARGO | 10 | Pioneer mail courier and banking service that operated in the western US from the mid-19th century |