From 1964: here are a few of these great cartoon circus sewing cards.
They are from Whitman Publishing and measure 6 1/4" wide x 8 1/4" high. Anytime you see the color red on the card, they are actually pasted on bits of fuzzy red felt. And, after all this time, most all of the felt is still there!
Sewing Cards from Platt and Munk Company, Inc.