Philosophy in 1919

Die Moderne Staats-Idee by Krabbe, H.

The Worst Boys in Town And Other Addresses: To Young Men and Women, Boys and Girls by Hill D. D., James L.

The Mystery Of Space by Browne, Robert T.

Kritik Der Reinen Vernunft by Kant, Inmanuel

Die Philosophie Des Unvollendbar by Lasker, Emanuel