Machen, J. Gresham – Literature and History of New Testament Times

Machen’s Literature and History of New Testament Times gives precious background information on the New Testament.

Bellett, J.G. – Pauls Apostleship and Epistles

Bellett Pauls Apostleship Epistles is a 31 chapter survey of Paul’s writings, with some additional 17 chapters on related topics having to do with the life and ministry (apostleship) of Paul.

Cole, C.D. – Definitions of Doctrine (3 Volumes)

Definitions of Doctrine is a basic doctrines book in three volumes. Vol 1 has 26 chapters dealing with the doctrine of God. Vol. 2 has 27 chapters on Sin, Salvation, and Service. Volume three has 27 chapters on the Church.