McMullen Peter Pan collar blouses: 50s?

These are lovely fitted blouses that I recently acquired, I’m leaning towards 1950s? The 1940s and 1950s labels shown in our resource are very similar, the 1960s label is quite different . They are all tailored in a similar manner with vertical darts in front and back as well as bust darts. They have not been clipped behind the mannequin, what you see is their actual shaping. All are from McMullen of Glen Falls, NY. The plaid one has a square cut armscye. The khaki and the white ones are a beautiful Moygashel linen!

 

Thank you, Karin! I have just found that Liza @Better Dresses Vintage had a very similar blouse to my yellow floral one (slightly different print) that was NWT in her store. She dated it as 1960s. Hmm.

I also have this lovely McMullen shirtwaist dress in a wonderful gauze-y crinkle cotton:

 

The 60s are more boxy in style.
Karin, I thought of you with this style blouse

 

Linn, you look fab! I wish Peter Pan collar blouses were still widely available today, I remember wearing them as a girl in the 1960s. I've seen some contemporary similar blouses but nothing with quite the "right" look.