lets see...
If I can date these...
the top pic is 1973 or so, thats a U4003 and U4005 Convertible in that pic. The DAM's in the front are probably 1157/1178 and 1149
pic #2's mass of Convertibles might be about 1971 or so. I can make out a 707 Convertible on the middle left.
Pic#3 is also 1971, thats an 1178 DAM powerdrive, with a 1030 and 1076 Convertible. Thats kinda what the vacuum display at Kmart looked like in the 70's
Pic#4 could be as old as 1969. I don't see a powerdrive DAM, and from the shades of the Convertibles those could be a 589 and 719.
Pic#5 could also be 1969. I'd love a Hoover any time, and I love that they used a 344 Commercial Convertible in this pic.
Pic #6 next to that is 1973, and the two men are with a U4005 Convertible
Pic #7 is 1971 again with the two ladies.
Pic #8 is from the middle 60's. The Convertible has a large medallion.
GAWD what I wouldn't give to walk into a store today and see a vacuum section that looks like any of the above...
