Here is a Ben Zuckerman suit made of linen, which probably dates from the early 1960's. It

has a striped pattern and as it was made of linen it would have been worn in the summer 

time.
The suit was sold at William Penn Hat & Gown Shop which was owned by Etta Markowitz and David Berman. They opened David Inc. a women’s clothing company in the William Penn Hotel catering to a high-end clientele. The business was later named the William Penn Hat and Gown Shop. It had several locations downtown before the family sold the business in the 1970s. The new owners moved the business to Walnut Street in Shadyside. The William Penn Hat and Gown closed its doors in 2001.
Photos courtesy of Zannew.