Allegheny Wesleyan Publishing
The Allegheny Wesleyan College Bookstore has a large selection of holiness books for sale at: https://awc.populiweb.com/router/bookstore/home
Schmul Publishing Company
Schmul Publishing Company publishes many holiness books that are not in print anywhere else. Order online at http://wesleyanbooks.com/, or call 800-772-6657.
Books on Holiness:
A Plain Account of Christian Perfection
By John Wesley
A Right Conception of Sin
By Richard S. Taylor
Helps to Holiness
By Samuel Logan Brengle
Holiness and the Human Element
By H. A. Baldwin
Books about the history of Holiness
The Conservative Holiness Movement: A Historical Appraisal, by Wallace Thornton, Jr.
The Holiness Heritage by Brian Black
When the Fire Fell, by Wallace Thornton, Jr.
The Radical Holiness Movement in the Christian Tradition, edited by William C. Kostlevy and Wallace Thornton Jr.
Radical Righteousness, by Wallace Thornton, Jr.
Mighty Man of Valour, by Wallace Thornton, Jr.
Patterns to Ponder, by Wallace Thornton, Jr.