Yeah, because no one knew fresh produce existed. 
Not in the winter time, either home canned vegetables or store bought canned.
Mom tells me in the 1920's a great find in the Santa stocking was a semi fresh orange, lemon or lime. Holliday treats were dried figs or dates stuffed with peanut butter and rolled in powdered sugar.
I made up a few dozen one year for work pot luck dinner. None of the Americans including me got to eat any, the Asians scarfed them down in 5 minutes. Another family tradition was to stuff celery ribs with chive cream cheese.
Everyone if possible had a root cellar or shared one with a neighbor, Turnips kept best as I recall.
Ah Traditions with food in family's. Hubby's family had the 2 Granny's cooking 24/7 for a week. One Irish, One Italian, the cabbage sat next to the ravioli, Boiled potatoes next to the spaghetti and someone always snuck in sauerkraut and sausage. Wonder who that was ?
I do tend to cook peasent French cooking, lots of tomatoes and heavy sauces but nothing Julia would ever make. Kind or hard to picture that woman as a SPY, The DU poster that mentioned the show with the dropped chicken was my favorite.