I own a copy of this book, and can tell you that it's virtually impossible to find. It is self-published and I honestly don't know how many copies are out there. I put in a search on ebay to notify me when a copy was up for sale and three years later, a copy appeared. I was really stunned that I won it.
I have considered selling mine, but am on the fence. If I decide to list it on ebay in the next few months, I will make a mention of it here.
I will say that you can order the microfilm from the LDS library and "read" it that way. I'm not sure if the Salt Lake City main genealogical library has a hard copy to read on the premises, but I was definitely able to read some of it on microfilm at the LDS library branch in Mesa, AZ a few years ago.
It is my understanding that Sara Nash was a teacher who never married, so I don't know who holds the copyright to this book, since she is now deceased. The book starts out quite neatly typed, but later, it gets a bit more cluttered and messy, like Ms. Nash just wanted to get the thing finished and published! It is considered to be the gold standard of genealogy for Laurens County.