Cunningham: Western Civilization in its Economic Aspects in Ancient
Times
. 1898.

Cunningham: Western Civilization in its Economic Aspects in Modern
Times
. 1900. (I also have the advantage of having taken notes of Dr.
Cunningham's lectures at Columbia University, November, 1914).

Rudolph Cristoph Eucken: Die Lebensanschauungen der grossen Denker. 1890. (7th ed. 1907: English translation, The Problem of Human Life, by W. Hough and Boyce Gibson, 1909).

F. Simmel: Soziale Differenzierung. 1890.

Robert Flint: History of the Philosophy of History. 1893.

C. Borgeaud: The Rise of Modern Democracy in Old and New England. Translated by Mrs. B. Hill. Preface by C. H. Firth. 1894. (First published in French periodicals 1890-1).

Herbert L. Osgood: "The Political Ideas of the Puritans," Political
Science Quarterly
, vi, 1 ff., 201 ff., 1891.

Wilhelm Dilthey: "Auffassung und Analyse des Menschen im 15. und 16. Jahrhundert." Archiv für die Geschichte der Philosophie, iv, (1891) 604 ff., v, (1892), 337 ff.

Dilthey: "Die Glaubenslehre der Reformatoren," Preussiche Jahrbücher, lxxv, (1894), pp. 44 ff.

Dilthey: "Weltanschauung und Analyse des Menschen seit Renaissance und
Reformation." Gesammelte Schriften, ii, 1914.