Ptolemy 
The collected works of Ptolemy. Illustrated 
Geography, Tetrabiblos

Ptolemy was a mathematician, astronomer, geographer, astrologer and music theorist, who wrote about a dozen scientific treatises, three of which were of importance to later Byzantine, Islamic, and Western European science.
Ptolemy's astronomy that were popular among the Arabs and Byzantines alike.
Contents:
Geography
The Translations
The Greek Text
Tetrabiblos

About the author

Ptolemy was a mathematician, astronomer, geographer, astrologer and music theorist, who wrote about a dozen scientific treatises