A rare peek inside the LENOX Colonial store. At the time of this 1968 image, it had just been renovated.

Photo from Colonial Stores, Incorporated Annual Report 1968

By the early 1970s, LENOX SQUARE was falling behind several newer -and fully-enclosed- malls in its trade area. In June 1972, work commenced on a renovation to enclose and air-condition the Mall Level of the complex. Work was winding down by November 1972, when this ad appeared in the local newspaper.
Advert from Noble Properties 

Along with the mall enclosure project came a third anchor department store. Dallas' trendy Neiman Marcus anchored a new Skylight Mall wing. The store was dedicated in August 1972.
Drawing from Broadway-Hale Stores, Incorporated

The roofing renovation and expansion was formally dedicated in January 1973. On this contemporary layout, the new Skylight Mall appears in medium gray. The previously open-air shopping concourse is now known as the Garden Mall. With these improvements, LENOX SQUARE spans approximately 1.1 million leasable square feet, with ninety-three stores under its roof.

An early '70s view of the Plaza Level Court, showing the Delta Kiosk, a fixture there for several years. In front of Davison's is the south end of the fully-enclosed Garden Mall concourse.
Photo from www.simon.com / Simon Property Group