Some fun scans from a pattern magazine, Leach-Way 263. The magazine isn't dated, but from the page titles ("A Simpler New Look"), the hairstyles, and the more mid-40s-looking fashions (some have knee-length skirts), I'd put it right on the cusp of the New Look, so 1947 or 1948. It's a very interesting period in fashion history, with the silhouette changing so suddenly, and it's fascinating to see the influences of both the new and the old 40s styles in these pages.
I love both versions of the frock on the left - with and without peplum. Which is your favourite?