From assorted newspapers or magazines that I went through in the research. These ads, while creepy, don't exactly fit into the book so here you go!
From 1950 here's some of the creepiest kids since Village of the Damned. If I didn't want to eat shredded wheat before(I didn't) then I definitely don't now.
I don't have an exact date for this next one but I do know that creepy porcelain masks will not make me want to buy stuff. Maybe it's just me.
From 1945 comes this inexplicable ad for anti-freeze. How long would you have to stare at this ad to figure out that's what they're selling? Yeah, a while.