DCox -Angels from Bible Dictionaries is a smaller module (actually has a lot of information) which I have compiled and added to this with my own writings. These are basically Bible Dictionary entries on the word Angel.
In More Excellent Ministry by Austin-Sparks (Deeper Life) he examines the biblical concept of ministry: The true source of all ministry–Union with Christ, the Experience of Ministry–pictured by Elijah, and the stewardship of Ministry–the steward’s vital position
What Is A Call To Ministry by J.D. Knowles A brief work in form of 7 letters about what is a call to the ministry.
Ministry of the Gospel looks at the Gospel’s foundation, nature and character, ends, Call and Qualifications, blessings, and trials, exercises, comforts and encouragements.