Someone in my family saved some vintage Spoolies. This card calls them Spoolie Hair Curlers with a copyright date of 1949. I photographed the ones that stayed soft or kept their shape. They're a little more than an inch high. I guess AG didn't want to or couldn't do licensing for Maryellen's set, but it would have added to the cuteness if it came with a retro product card.
FYI, the Spoolies website About Us page has a picture of an old card which is different from mine.