This article from the June 13, 1955 issue of Life magazine (you can see the article online here) is about wraps, shawls and bolero jackets that ward off the chill of summer air conditioning. When I worked in an air conditioned office, I always had a cardigan with me; otherwise I would freeze to death at my desk. I suppose the modern day equivalent of these might be the pashmina, but I really prefer the cover-ups shown here. And they work just as great at helping transition your summer dresses into autumn wear! The two modeled on the left side are made to fold up small enough to fit in your purse when not being worn. And the best of all of them, I think, is the striped shawl on the right, which was made by Claire McCardell "to inspire do-it-yourselfers."
Here are a few lovely cropped jackets, sweaters, and boleros I discovered for sale on Etsy.
1940s reversible lace-trimmed bolero (the other side is solid black, but wouldn't you have a hard time not always wearing it on the cute folklore print side?) / DeseoVintage
PDF pattern for a 1950s knitted shrug / KinsieWoolShop
1960s Jonathan Logan shrug with rhinestone embellished flower appliques / LittleHavanaVintage
1950s cropped jacket with a big collar / Planetclairevintage
I really love this. 1960s Vera Neumann lemon print linen jacket / CustardHeartVintage
1930s white eyelet bolero / wildfellhallvintage
And a pair from my own shop: