The Carnal Mind by Harmon Allen Baldwin is a 30 chapter work on the carnal mind, defining terms, biblical view, what is evil, guilt, pollution, self-denial, oppositon to light, etc.
This is a 17 page examination and defense of the doctrine of the Trinity. Alford examines Christ’s humanity as well as his divinity. Specifically Alford establishes Christ’s divine traits (omniscience, wisdom, omnipresence, immutability, omnipotence, equality with the Father, deity), and then he examines issues of the trinity, plurality of the Godhead, number of persons in the Godhead, the Father-Son-Spirit are one God. Then Alford examines the consequences of this doctrine, specifically in the light of the Unitarian’s denial of it, and finally Alford examines criticisms of the Trinity.
Robert Shaw’s short 1 chapter work on God and the Holy Trinity is an excellent collection of observations and verses that defend the Trinity.
McGee-How to Stand Against Satan is a single article on how to win our fight with Satan.
John Owen – Decay of Spiritual Affections is a 12 page sermon apparently from a larger book of sermons (starts on page 250+).
In Simpson Holy Spirit Vol 1 Simpson (M&CA) presents symbols of the Holy Spirit and some studies of the Holy in some books (Judges, Proverbs, Joel, Isaiah, Ezekiel, Jeremiah, etc).
Dr John R Rice’s small book on new converts, setting out the steps he sees as good for them. Assurance of Salvation, Baptism, Young Children, Prayer Life, and Giving and Soul-Winning (Evangelism).