Bhrigu Samhita is an Astrological (Jyotish)Book or classic written by 'Maharishi Bhrigu' during the Vedic period. Although the available evidence suggests that this was compiled over a period of time by the various Sishyas of Maharishi Bhrigu. It is confirmed that Mahirishi Bhrigu was the first compiler of Vedic Jyotish Astrology Book .Maharishi Bhrigu compiled about 5 lakh horoscopes with help of Lord Ganesha and recorded the life details and events of the persons along with their ages. These Horoscopes were based upon the Planetary position of the Sun, the Moon, Mercury, Venus, Mars, Jupiter, Saturn, Rahu and Ketu. After that, Maharishi Bhrigu gave his predictions on different types of Horoscopes compiled by him with the help of Lord Ganesha in a brief and concise manner.
Ravana Samhita is also a Jyotish Book by 'Ravana' as well known that Ravana was a great Pandit and his knowledgeon Vedic Shastras was well noted. Original Ravana Samhita,as per Jyotishis,is available at Museum of King of Nepal,and some parts of that Book is also available with a Pandit,residing near Nepal border.On the basis of this Book one may find his/her future prediction.