 The Essentails of Prayer by E. M. Bounds |  Prayer by Ole Hallesby |  Praying by J. I. Packer |  The Circle Maker by Mark Batterson |  Power Through Prayer by E. M. Bounds |  Quiet Talks on Prayer by S. D. Gordon |  Approaching God by Steve Brown |  Mighty Prevailing Prayer by Wesley L. Duewel |  A Call to Prayer by J. C. Ryle |  Andrew Murray on Prayer by Andrew Murray |  The Power of Prayer and the Prayer of Power by R. A. Torrey |  Too Busy Not To Pray by Bill Hybels |  The Power of Crying Out by Bill Gothard |  The Necessity of Prayer by E. M. Bounds |  A Diary of Private Prayer by John Baillie |