Here are the direct links to some of the classical books on vedic astrology
Stri Jatak
Satya Jataka
Bhavartha Ratnakara
Bhrigu Sutras
Uttarakalamritam
Phala Deepika
Kalyana Varma's Saravali
Mantreshwara's Phaladeepika
Brihat Parasara Hora Sastra
Jaimini Sutra (Commentory by Bangalore Suryanaran Rao)

Some of these documents may also be of your interest -
Mantras and remedies for the nine planets
Atmakaraka
Jyotish Alpha & Beta
FAQ on Retrograde Planets
Vedic Calendar
Loss and Gain in Career
Sri Yantra and Sideral Astology
Effects of Navamsa
Nabhasha Yoga