That is so cool! So many things I never knew existed! Slimlines, Floor a Matics, the whole ball of wax! That Concept type unit had to have been there when I was working there, but for whatever reason all that sticks out in my mind are JCPenney-labeled Eureka Ironside Canisters with power nozzles. Then again, they may have had a broader selection in the downtown Minneapolis and Southdale stores (Southdale is a suburban mall, but that store was much larger than ours).
And I've never seen a Wards unit made by Hoover! Only Eureka.
This has been like the coolest thread ever, as I have learned so much!!