While trying to automate my Google Earth into an offline cache, I found this blog.
As it turns out, this man has described ways to load several types of maps offline, including topo maps and Google Earth.
To download Google Earth offline, you will need software from a companion site (free to use, $20 to donation) called Dr. Regener
I am now in the process of creating high resolution offline Google Earth caches that can be placed onto an external thumb drive and viewed as needed without access to the Internet. – Dan in Florida