Looking at an August 1974 issue of the Kitchen-Klatter Magazine, I came across a Gardener's Quiz, and am struck by all the vegetable varieties I've never heard of. The person who came up with this quiz must have had a seed catalog handy.
It could be we're still eating some of them, but are not apprised of the varietal names. I've googled all of these and inserted links so you can read more about them. The only one I couldn't find online is the first one.
1. What vegetable has a name like a city in Japan? (Tokyo Bell Peppers)
2. What fruit has the same name as a famous falls? ((Niagara Grapes)
3. What fruit tree has the same name as a famous popular singer? (Bing Cherries)
4. What fruit tree has the same name as a TV star? (Jonathan Winters)
5. What fruit tree is like well-to-do people? (Wealthy Apple)
6. What peach has a girl's name? (Alberta Peach) aka Elberta
7. What variety of tomato is like a landslide? (Avalanche)
8. What variety of tomato is named like a famous TV ranch? (Ponderosa)
9. What variety of tomato is like a boisterous girl? (Tomboy)
10. What raspberry has an Indian name? (Black Hawk)
11. What variety of blueberries is named like a town in California? (Berkeley)
12. What variety of strawberries is like a member of the government? (Senator Dunlap)
More about the Senator in the Napa Valley Register: Senator Dunlap
13. What variety of sweet potato has the name of an island in the West Indies? (Puerto Rico)
14. What vegetable has the same name as a town in Michigan? (Grand Rapids Lettuce)
15. Name a cabbage that reminds you of Denmark. (Copenhagen)
16. What vegetable reminds you of a city famous for automobiles? (Detroit Dark Red Beets)
17. What sweet corn is like a well-mannered farmer? (Country Gentleman)