Full color!
The reverse of this card indicates it was 1965. The girls Kathy & Karen are again in matching pajamas, and looking at a large decoration. It appears to have a small elf on it, and reminds me of a mistletoe ball my mother had. The girls are surrounded by pretty packages. The color printed card also features holly and ribbon ties, and is signed The Kleins / Fred, Isobel, Kathy, Karen.
Who Were They? 