A Great Blessing to Me; John Newton Encounters George Whitefield by Grant Gordon and published by Christian Focus Publications.
George Whitefield, regarded as the preaching wonder of his day, and John Newton, one of the leading spiritual guides of the movement that Whitefield had a significant hand in creating, Evangelicalism, are perennially interesting figures.
These lives, intertwined as this study of a portion of those lives reveals, speak across the centuries to our day. These two marvellous characters have much to teach contemporary Christians. A great read for both the professional historian and the thoughtful Christian.