Sewing cards from Platt and Munk Company, Inc. were a staple in the 1950s and 60s. It taught the little ones how to lace, you see. These cards here, which I picked up in a second-hand store in Bristol, NH, were printed and reprinted from at least 1952 to 1969. I didn't buy them to bone up on my lacing skills, but because I liked the bold graphics. They are a little larger than the Fuzzy-Wuzzy Circus Train Lacing Cards, being about 10 1/2" x 7". They were sold in boxes of six or a dozen cards.
Here's a set of them from 1969 (photo nicked from eBay):