"Christian Workers' Commentary on the Whole Bible" by Dr. James M. Gray. I bought a copy from a used book sale. I picked it up for $1.00 and it is absolutely worth more than that. I have used it thus far in studying the Bible, and I can say that it has really been a blessing to have such a succinct book like this to refer to. The edition I have is published by "Spire Books" (c)1971. I checked out Amazon and they are selling a nicer version of what I have. Nicer cover, I am sure nicer binding because it is brand new (of course you do know they also have used edition of Dr. Gray's work). 592 pages and soft cover.