The Races of Europe: A Sociological Study, (Lowell Institute Lectures). E-book. Formato PDF William Z. Ripley   -  Forgotten Books, 2017  - 

The courtesy manifested by the officers and council of the Anthropological Institute of Great Britain, in intrusting the valuable albums of British photographs belonging to the Society to my charge, merits the deepest gratitude. As an act of international courtesy it is peculiarly worthy of note at this time. Professor A. C. Haddon, of Cambridge Uni versity, and Dr. C. R. Browne. Of Dublin, Ireland, have also, among English authorities, rendered important service. In Germany. I have continually turned to Dr. Otto Ammon. Of Carlsruhe, for aid, and have not failed in any instance to find a ready response.