I taught in an elementary school (my first teaching job)
that was in a terrible flood in 1972, "Agnes". After the school was restored, they carpeted every classroom. The school purchased 8 of those vacuums from the late Betty Fritz, in Wilkes Barre. Can you imagine 8 of them in one school? It was wonderful. That was the top of the line vacuum back then. True: "When only the best will do".