Received another shipment from Philabooks this morning:Handbuch Luftpost Freie Stadt Danzig
(Handbook of Free City of Danzig Airmail)
This handbook is thick. It actually has entries in chronological order covering almost 50 years of airmail history.140 Jahre Briefmarkenkunde in Frankfurt am Main
(140 years of Philately in Frankfurt am Main)
And finally, this 2-volume monster -- Europäer in Deutsch-Südwestafrika, ein "Who is Who" von 1884 bis 1919
(Europeans in German Southwest Africa, a "Who's Who" from 1884 to 1919).
These 2 volumes contain a list of all Europeans known to have lived in German Southwest Africa.