Fra i due mondi

Primitive culture, vol. 1 (of 2)

The American Mind The E. T. Earl Lectures

The Spirit of America

History of Human Society

Everyday Americans

People of Destiny: Americans as I saw them at Home and Abroad

The World's Progress, Vol. 01 (of 10) With Illustrative texts from Masterpieces of Egyptian, Hebrew, Greek, Latin, Modern European and American Literature

Kultur-Kuriosa, Zweiter Band

Die Anfänge der Naturbeherrschung. 1. Frühformen der Mechanik

Walled towns

Recent Developments in European Thought