Letters re 'Eingeborene und Ansiedler auf Samoa'
Publications re war treaties
Correspondence with publishers re publications and memoirs
Press reviews re 'Kolonialpolitik'
Lectures and essays on Japan
Press opinions on Solf's lectures and publications
Official and political papers re the German Consulate-General in Calcutta
Official and political papers re East Africa
Official and political papers re Apia municipality
Publications re war treaties