A vintage view of the YORKTOWN Wieboldt's. The Chicago-based chain's twelfth branch housed 203,100 square feet.
Photo from Wie‪boldt's Stores, Incorporated Report 1986

Montgomery Ward anchored the original YORKTOWN CENTER with a 240,000 square foot store. It was the mall's largest tenant.

Drawing from Montgomery Ward & Company

The Complete Penneys at YORKTOWN encompassed 230,800 square feet. The store sold everything "from a spool of thread to a refrigerator".
Drawing from the J.C. Penney Company

A 2-level Woolworth's was the first operational inline store in YORKTOWN CENTER. It opened for business in September 1968, and would be a mall tenant for nearly 30 years.
Photo from http://www.flickriver.com / "Flickriver PhotoStream" / William Bird

Soon after the mall's completion, a freestanding convenience center was built. Adjacent to the north parking area, the store strip was completed in late 1969. Its largest tenant was a National Foods supermarket.

Advert from Long-Pehrson Associates

Our first YORKTOWN plan dates to late 1969. The mall proper covered approximately 1,350,000 leasable square feet and contained ninety-five stores and services beneath its roof. In addition to being one of the largest malls in the United States, it was also the Windy City's first 4-anchor shopping center. Free parking was provided for 9,000 autos.