Above and below are two snapshots, which show the mall's fountained and festooned Center Court.

Photo from http://www.flickr.com / SPM History 

These images were taken in July 1970.

Photo from http://www.flickr.com / SPM History 

"The shopping city of the '70s" is depicted in a circa-1973 site plan. This diagram shows the original configuration of the mall in black and new fourth anchor (Joseph Horne Company, a.k.a. "Horne's") in dark gray. With this addition, the complex enveloped approximately 1,001,500 leasable square feet, housed 101 stores and services, and provided parking for over 6,000 autos. 

Horne's Court, in the original SOUTHERN PARK.

Photo from https://www.reddit.com / "r/youngstown"