Into the 50's the graphics changed as with the size of the headstock. Even the color of the logo seemed to change as time went on.When the guitar boom of the 60's happened, the guitars got simpler and more mass-produced.
Harmony also made violins during the early part of the century.
Along with manufactures like Kay and Regal, Harmony supplied a lot of instruments over the years.
I have had many other type of instruments made by Harmony.
They supplied many of the big mail order catalogues through the years.
Sears marketed many of the Harmony instruments under the Silvertone label.