I thought I had submitted this bio with tags years ago, but in dusting off my small & ancient blog, it looks like not. The labels are smaller than ideal, but hopefully usable. Unfortunately, the shirts sold years ago so I can't go back and reshoot.
Nat Nast was called “The King of Bowling Shirts”, and is believed to have produced the very first bowling shirts when he started his company in Kansas City Missouri in 1946. Nat Nast created the first shirts with inverted pleats, known as the Action Back. The shirts were made out of washable rayon and the company eventually specialized in customized embroidery for colleges and universities as well as bowling teams and their sponsors across the USA. The Nat Nast company was sold in the 1970s. A revival of sorts came about in 2000 when his two daughters started Nat Nast Luxury Originals, basing their designs on their father’s iconic shirts but adding embroidered artwork.
I believe these are both 50s vintage, the pink a bit earlier than the blue.
Added to the LR 3/10/22
Thanks, Mags!