Keywords: Page 29 of Story of geographical discovery (Jacobs).png in that work states The World according to Ptolemy ”It will be observed that the Greek geographer regarded the Indian Ocean as a landlocked body of water while he appears to have some knowledge of the sources of the Nile The general tendency of the map is to extend Asia very much to the east which led to the miscalculation encouraging Columbus to discover America University of California Libraries at https //archive org/details/storyofgeographi00jacorich 1916 c1915 Unknown see text PD-old-70-1923 Maps from books Story of geographical discovery Ptolemy maps |