vintage Coats & Clark advertising ephemera, old sewing notions cards Spool Pets paper dolls

Lot of four cards from seam binding or other sewing trims - these have 'spool pets' to cut out like paper dolls and glue to wood spools from sewing thread. I think these are probably 1920s and 1930s. Two are Kitty Cat, two are Bob Bunny, as shown. So, so cute!