One of the readers of this blog asked for Lal Kitab. I remember I had one copy of Lal Kitab in downloadable format. But this time I was unable to find it. I did a google search for Lal Kitab. But surprisingly it brings me to this blog. Anyway, I found another page where there were some other books available for download. You will also find some other Vaidik astrology treatise like Garga Hora, Bhavartha Ratnakar, Prashna Tantra and Sanketnidhi.
Please check the link here.