Start with high-confidence theology books, then narrow by subgenre or adjacent topics.
The Oxford Handbook of African American Theology
Katie G. Cannon, Anthony B. Pinn
Fifty Prayers
Karl Barth
Angels and Demons
Serge-Thomas Bonino OP, Michael J Miller
Christian Community in History Volume 2
Roger D. Haight, Roger Haight
The Golden Bough
James Frazer, James George Frazer
Practical Mysticism
Evelyn Underhill
