Vintage photos of RIVER OAKS CENTER are few and far between. Above is one of the few that I could find. Here, we see the sunken Center Court-Amphitheatre area, with the 8-story Professional Building off in the distance.
Photo from Curteichcolor

Sears & Roebuck, Chi-Town's hometown general merchandise department store, built one of their largest suburban locations at the RIVER OAKS mall. The unit encompassed 338,000 square feet on 2 levels.
Drawing from Sears, Roebuck & Company

Another Chicago-centric retail giant co-anchored RIVER OAKS CENTER. Marshall Field & Company's store spanned 260,000 square feet over 3 floors. Its resident restaurant was known as The Tea Room.
Photo from Marshall Field & Company Annual Report 1967