With Christ in the School of Prayer and Humility by Andrew Murray, Prayer Availeth Much by T.M. Anderson (Andrew Murray Books)

With Christ in the School of Prayer:
Greatly concerned for the spiritual guidance of new converts, and for spiritual growth in long time Christians, Murray penned some of the most enduring devotion...al classics of Christian literature. The two beloved works in this volume reflect Murray's longing for a deeper life in Christ, and his prayer that others would long for and experience that life as well.
Prayer Availeth Much:
I am convinced that the people of God have not explored the boundless possibilities of prayer. We evidently believe that the effectual fervent prayer of a righteous man availeth much, but we are often aware of the fact that very little has been accomplished by our own prayers. It has not been possible to present a complete study of the subject of prayer revealed in the Holy Scriptures. For one to undertake such a task would be like an attempt to measure eternity by a span. It is my sincere desire to encourage God's people to pray without ceasing. When once they understand the fundamental principles of prayer, they will not find it difficult to accomplish some amazing results through effectual fervent intercession. -- T.M. Anderson