On a chilly winter day in 1929, Halil Edhem, the Director of Turkey's National Museum, was hunched over his solitary task of classifying documents. He pulled towards him a map drawn on Roe deer skin. As Halil opened the chart to its full dimensions (two feet by three feet wide or 60 X 90 cm) he was surprised by how much of the New World was depicted on a map which dated from 1513.