There not pretty, but they all work
Starting from the left (oldest) we have a Hoover model 300 from around 1935
In the middle we have a Hoover model 28 from the mid to late 40's I believe
Then on the far right we have a Hoover dial-a-matic from the 60's
hippiedoll, I see that you appreciate vintage Eureka vacuums. I have a deep admiration for them also. They are fantastic machines cosmetically, not to mention their strong affinity towards longevity/indestructibility. Their lines are not only subtle and sleek, but they possess an undeniable performance, a superior performance, which is most pleasing in every way. They are, indeed, beautiful to behold, and with their age, not only comes wisdom, but a profound beauty which can never be subdued by its years. I have posted a photo for you. The Eureka to the left is a 1923 model 9, and the one to the far right is a 1929 model 10. The one pictured in the middle is a 1983 model 1485B.