Light on Life (Not only the best Vedic astrology book in English, but a huge number of insights and gems for Western astrologers too.)
Path of Light vol. 1 & 2 (Truly excellent new books by a brilliant and generous astrologer who shares his great depth of understanding of Jyotish. Highly Recommended!)
New Techniques of Prediction 1 & 2 (For advanced Vedic astrologers only, the brilliant predictive methods and understandings of a great Jyotish master)
Learn Astrology The Easy Way (For beginning to intermediate students of Vedic astrology, this provides a very good education in Vedic astrology.)
A Thousand Suns an excellent new Vedic book that covers a huge range of Vedic topics in a very accessible and easy-to-read conversational style. Highly Recommended!
Astro Sutras
Events and Nativities
and Art of Predictions (excellent books by the late excellent astrologer Bhasin)
How to Read a Bhava (a very small book that condenses divisional chart analysis quite well)
Varshphal or Annual Horoscope (an excellent book on Vedic Solar Returns)
Predictive Astrology - An Insight (a comprehensive & excellent analysis of planets in houses)
Practical Vedic Astrology (a fine compendium of 25 years of the authors notes, well organized)
How to Read Your Horoscope (newly reprinted – excellent modern interpretations of lordships , planets in signs and houses, etc.)
Vault of the Heavens (a lovely and comprehensive textbook on Vedic astrology, complete with modern interpretations of the lordships for each Lagna, and more.)
& Core Yogas (a unique, descriptive, and comprehensive analysis of yogas)
Navamsa in Astrology (extensive examination of the navamsa and classical approaches to it.)
A Course in Indian Astrology (101 lessons in astrology by knowledgeable Jyotishis)
Dr. K.S. Charak has many books, including a two volume Elements of Vedic Astrology, Varshaphal (which Hart endorses), and my favorite of his Yogas in Astrology
Astrology and Jyotirvidya (a very intelligent and well-thought out book on many facets of Jyotish, including Nakshatras, Dasas, Prognosis, and much more.)
Mansions of the Moon (a wonderful book on Nakshatra myths, meanings, etc.)
Predictive Astrology of the Hindus (extensive and excellent)
The Astrology of the Seers (a very good book, but it mixes a little Western astrology in)
The Lunar Nodes (some very good insights in this one)
also her Essentials of Vedic Astrology and her Indian Astrology coffee table book have merit.
Ganesha Hora Shastram (An incredibly deep exploration of each house, its occupants, and lord.)
Nakshatras (The first Western book on Nakshatras, the product of a great deal of research.)
You can download a free collection of Classical Vedic Texts including Brihat Parahara Hora Shastra, Bhavartha Ratnakara, Bhrgu Sutras, and many more by clicking here. (Just scroll down the page a bit to find all of the classical Vedic texts.)
Brihat Parashara Hora Shastra (the "bible" of Vedic astrology)
Phaladeepika (the second most important "bible" in Vedic astrology)
Uttara Kalamrita (an excellent book showing themes of each house in depth)
Saravali (two volume classic focuses on planets in houses, decanates, etc.)
Bhrigu Sutram (a look at each planet in each house, with reference to 4 Vedic classics)
Brihat Jataka (one volume with extensive and interesting notes by the translator) and Sri Sarwathachintamani (two volume set with extensive, useful commentary of this major Vedic classic)
Jataka Parijata (3 Vol) (/w Original Slokas in Sanskrit and English Trans. My Vedic teacher, Hart often quotes this important work that is used as the textbook in Vedic studies in India )
Kalaprakasika (I haven't seen this one, but it's recommended by Hart)