A list of things Steve Rogers would historically be unfamiliar with:

buckobarns:

I fell down a rabbit hole of research about inventions circa the 40s and was surprised by a bunch of things that have been around way longer than I thought and some that are strangely reccent, and compiled them into a list. Aka, a resource for fic writers.

• Bananas (or rather, the ones we have today. The ones he’d be accustomed to, the Gros Michel, a sweeter, creamier species, went extinct in the 50s and was replaced with the bland Cavendish banana.)
• High-fives (the low-five was actually invented first, around WW2, and he may have been familiar with that)
• Buffalo Wings (invented in the 60s)
• CPR (not invented until the late 40s, not widely known until the 50s)
• Tiramisu (invented in the 80s)
• Big Macs & McNuggets (while McDonald’s was founded in 1940, the former wasn’t introduced until the 60s, and the latter, the 80s)
• Seat belts (the first car to have one was in the late 40s, and only became mandatory to wear them in the 80s. holy shit.) 
• Walmart (invented in 1962. Or really, the large-scale supermarkets as we know them today really)
• Yellow tennis balls (prior to the 70s they were usually black or white)
• Panadol (first sold in the US in the 50s)
• The smiley face aka 🙂 (popularised in the 60s)

Now alternatively, here’s a list of things Steve WOULD (or possibly would) be familiar with:

I’m not sure why some of these surprised me.

• Sunglasses (have been around a lot longer than I thought, and were mass produced in the 20s)
• Nokia (was first founded in 1865. I’m not kidding. They began as a pulp mill and moved into making rubber respirators for military from the 30s onwards)
• Nintendo (been around since 1889 as a toy company, during the 40s they made playing cards. Wouldn’t be implausible that he knew about Nintendo, perhaps from Morita)
• Krispy Kreme (opened in 1937, didn’t spread widely until the 50s however)
• Kool-Aid (introduced in the 30s)
• Oreos (introduced in 1912)
• Printed/graphic tees (didn’t become a trend until the 60s-70s, but they certainly existed in the 40s)
• Hoodies (originated in the 30s, worn by workers in cold New York warehouses. Meaning, it’s entirely plausible Bucky could’ve been wearing hoodies in the 40s)
• Malls (they weren’t called that back then, but they certainly had shopping centres or plazas since the 1800s)
• Converse sneakers (invented in 1908 and have barely changed since!)