Fortress of the Muslim, Invocations from the Quran and Sunnah: is a very beautiful booklet consists of many authentic Dua's (supplications) for a Muslim to supplicate on a daily basis and on special occasions.
Author: Saeed Bin Ali Bin Wahf Al-Qahtani
This book, The Religion of Truth, treats these basic and great subjects. We should know that the only way for our salvation in this life and in the hereafter is to know, for sure, our Lord who created us, believe in Him, and worship Him Alone. We should also know our prophet whom Allah had sent to us and to mankind, believe in Him and follow him. We should know the Religion of Truth which our Lord has commanded us to believe in and practice it.
Author: Abdurrahman bin Hammad Alomar
The true Islamic personality of the Muslim woman as defined by the Quran and Sunnah offers the reader a comprehensive overview of the woman's place in the Islamic scheme of things, and many roles which a woman may play throughout her life - daughter, wife, mother and friends - are explored in details.
Author: Muhammad Ali Al-Hashemi
Publisher: International Islamic Publishing House
A monumental work discussing the Makkan period of the Prophet's life, and a refutation of Orientalist attacks.
Author: Muhammad Mohar Ali - Mohammed Mahr Ali
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243
One of the most detailed books describing the rulings of Hajj, Umrah, and visiting the Masjid of the Prophet (peace be upon him).
Author: Sayid Sabiq
Source: http://www.islamhouse.com/p/1395