I have just posted:

The Remarkable Prayers of the Bible by Jim George.  "Your journey into the lives and prayers of twelve ordinary men and women of the Bible will help you to grow in your faith in God and your understanding of the importance of prayer.  Each chapter includes Lessons to Learn about Prayer and Prayer Principles."

The Beautiful Work of Learning to Pray by James C. Howell.  "Howell examines the barriers to prayer and invites us to take a fresh approach."  31 lessons may be used as a presonal guide or with a small group.

Beginning to Pray by Archbishop Anthony Bloom.  If you have recently read and wondered about Mother Teresa's feeling that God was absent in her life, you may be interested in this book.  Archbishop Anthony Bloom is a monk and addresses the absence of God in the very first chapter of his book.  "Obviously I am not speaking of a real absence--God is never really absent--but of the sense of absence which we have....What ought we to think of this situation?"

There are 2 authors that I highly recommend on prayer.  Evelyn Christenson, also the book "Beyond the Veil" by Alice Smith.

These 2 authors have aniled it on the head.  The Beyond the Veil was so good I send it down to a good friend of mine after I finished with it.  But I have seen it has been posted and available.

Have you read Jim Cymbala's Breakthrough Prayer?  I recommend it. 

The Power of  Simple Prayer by Joyce Meyer. I'm only half way through it and I love it. Great practical application; it's made me more conscious of words I use during prayer, such as the "just" prayer.

Since we're recommending books on prayer - you must check out "The Kneeling Christian" by Anonymous