B&W images courtesy of Rick Payne via dadric's attic + the William Stillman Collection.
A full-color version was issued too.
Color images via plethora-of-paper.
The girl's Snow White dress pattern from McCall is no. 558. Original retail price 35¢. Examples of a size 12 and size 10 are shown below.
Size 10 pattern image via thebluegardenia.com.