This pretty set of postcards was issued as an advertsement for a New York City health club. They show a woman lying on her back with a ball underneath her shoulder blades.
The postcards were published by Max Racks.
Postcard Condition: Mint
Postcard Publisher: Max Racks
Postcard Size: 4 1/2 by 6 inches (10.75 x 15.25 cm).