Los Angeles' CRENSHAW CENTER was the nation's first regional-class shopping center. The original complex featured large, multi-story department stores and acres of free parking. It also included a large Von's supermarket.
Photo from http://s11.photobucket.com / "DCGrocery"

Graphic from the Von's Grocery Company

Another innovative regional shopping center was Chicagoland's PARK FOREST COMMERCIAL CENTER / PLAZA. In this vintage view, we see its Jewel Tea Company supermarket, which opened in 1950. 
Photo from Malls of America Blogspot

Graphic from Jewel Tea Company, Incorporated

A mid-century mom shops for groceries for her (2.5-child) Nuclear Family.

Photo from Library of Congress / Thomas O'Halloran