Another mid-'60s interior view. Here we see the Escalator Court, which featured the Birdcage Garden, a 32-foot-high aviary. The mall entry of an F.W. Woolworth 5 & 10 can be seen in the lower left.
Photo from http://lumlibrary.org

The Plymouth Grille was a kiosk-type snack bar adjacent to the mall's Woolworth's Harvest House Cafeteria.  

Photo from F.W. Woolworth Annual Report 1966 

In October 1966, one of the specials at the Harvest House Cafeteria was a $1.10 roast turkey dinner.
Advert from F.W. Woolworth Company

Strawbridge & Clothier opened its doors in February 1966. One of the store's many features was its Plymouth Terrace restaurant.
Drawing and graphic from Strawbridge & Clothier 

Philly-based Lit Brothers anchored the northeast end of the mall. Their store welcomed first shoppers in October 1966. Like Strawbridge & Clothier, it included an upscale restaurant.
Drawing and graphic from the City Stores Company