Prince Henry The Navigator, The Hero Of Portugal And Of Modern Discovery, 1394-1460 A.D.; With An Account Of Geographical Progress Throughout The Middle Ages As The Preparation For His Work.
The Dawn Of Modern Geography. A History Of Exploration And Geographical Science From The Conversion Of The Roman Empire To A.D. 900, With An Account Of The Achievements And Writings Of The Early Christian, Arab, And Chinese Travellers And Students.