Robert (Camp Dresser & McKee, Tampa, Florida USA) Dickinson 
The Makers of Modern Geography (RLE Social & Cultural Geography) [PDF ebook] 

This book examines the works of the outstanding makers of modern geography and demonstrates the consistency of idea and purpose in their work. Geography as an explicitly defined field of knowledge is more than two thousand years old, but as a university subject, geography is only 150 years old, and in this period it has developed hugely. This study traces the development of modern geography as an organized body of knowledge, in the light of the works of its foremost German and French contributors.