Oh yes, Fullerton & Southport. By the time I hired on during June '70, most of the "armies" shown had been decimated. During '72, all the offices were moved to CUS.
The building was sold and the developers figured "we will just chop it down". Only problem, it wouldn't come down, so they "repurposed" it. It stands to this day and has become a retirement community.
Otherwise, locations at Western Ave, Bensenville, and MILW Shops appear authentic.
I left "before The End" at end of December '81 (whoops, one day during Jan '82 - and it was a productive day as I recall - to qualify for four weeks vacation pay) with "mixed" memories.