Heinrich Claß was a German right-wing politician and president of the Pan-German League from 1908 to 1939. He is commonly known for his books about far-right policy, written under the pseudonym "Daniel Frymann" or "Einhart". The most famous of these was his 1912 book "Wenn ich der Kaiser wär" (If I were the emperor), in which he agitates for imperialism, Pan-Germanism and Antisemitism. Wikipedia
The definitive Wikipedia entry for Heinrich Class. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Heinrich_Class
In the imperial era, Class spoke the language of the radical right that became ever more at home in the political discourse of the Weimar Republic. h-net.org/~german/gtext/kaiserreich/class.html