Sometimes, when I traveled to Seattle for work, I would stay in SeaTac near the airport. Many times I would visit Robert Martin's church, and was always blessed by his preaching. But I didn't know that he was the same guy who wrote this book. So, I approached him one day after the service, and asked if he was the same guy. He said he was. And that he first put all of this together for himself, as a preaching tool. I told him how much I loved this book and how much I used it in my personal study. I was saddened when I visited again last year to find he had died.
He wrote another book on the Sabbath, which can be found here:
http://www.heritagebooks.org/produc...ligation-and-practical-observance-martin.html