WILLIAM B MACKENZIE &JOSEPH HART
The book is published by Sprinkle Publications, and contains two works. The first work is by Joseph Hart, the author of many hymns, and is titled, A Discourse Upon Justification: Showing the matter, manner, time, and effects of it. It was first published in 1743. The second work is by William B. MacKenzie, and is titled, The Justified Believer: his security, conflicts, and triumph, and was first published in 1848.