Gospel of the Comforter by Steele is a 36 chapter work on the Holy Spirit and different aspects of Him (1897).
Cox details the evidence for the doctrine of the Trinity in the Bible looking dozens of different angles.
Timothy Lin work of the Fruit of the Spirit is a short 1 chapter work about the Holy Spirit and the fruit of his indwelling in the believer.
Steele – Love Enthroned is a work on what is love, its different aspects, biblical examples, etc. 23 chs.
In Smeaton – The Doctrine of the Holy Spirit he examines historically what the Bible teaches about the Holy Spirit. This is an old classic work (1862). In the New Testament portion he looks at topics.
Zuck-The Role of the Holy Spirit in Hermeneutics is an excerpt from Bibliotheca Sacra on the Holy Spirit helping us understand Scripture
In Chuck Smith Person and Gift of the Holy Spirit, Smith focuses on the Holy Spirit living and working within the believer, as well as the person of the Holy Spirit.