Esri is the biggest GIS company in the world, and has a long history. The logo of a company represents its’ value, dimension and even vision. So we can see the history and evolution of Esri through it’s logos.
I find a blogpost which concerns the Logos of Esri. It almost covers the overall Logos of Esri (I think…).
However, in Chinese mainland, we can’t access the website directly in normal condition because of the GFW.
So, I make a screenshot of this post:
The source url: http://gisandscience.com/2010/12/30/esri-logo-an-evolution/