Ptolemy
Sacratissime astronomie Ptholemei liber diuersaru rerum, quem scripsit [sic] ad Heristhonem filium. [Venice] P. Liechtenstein, 1509.
Displayed here is a 1509 edition of second century astronomer and geographer Ptolemy's work. Ptolemy's astronomical theories were the most influential in the thirteen centuries before 16th century astronomer Copernicus.
