After Germany Without Bismarck (1967), Röhl edited the political correspondence of Philipp, Prince of Eulenburg (1847–1921), the closest friend of Kaiser Wilhelm II until his fall from grace in a series of scandals in 1907–09, in three volumes under the auspices of the Historical Commission of the Bavarian Academy of Sciences.
After publishing "Germany Without Bismarck" (1967), Röhl edited the political correspondence of Philipp, Prince of Eulenburg (1847–1921), a close friend of Kaiser Wilhelm II until his downfall due to scandals in 1907-09, in three volumes under the auspices of the Bavarian Academy of Sciences' Historical Commission.