Toward 2000: opportunities in transportation evolution.

Mode of access: Internet.

The ancient classical drama; a study in literary evolution intended for readers in English and in the original,

"Courses of reading": p. [458]-460.

Women and economics; a study of the economic relation between men and women as a factor in social evolution,

Mode of access: Internet.

Intermediate types among primitive folk; a study in social evolution

Pt. 1 originally published in the American Journal of Religious Psychology, 1911, and in the Revue d'Ethnographie et de Sociologie, 1911

The making of Hawaii; a study in social evolution,

Bibliography: p. 257-262.

The function of socialization in social evolution

Mode of access: Internet.

Henri Bergson; a study in radical evolution,

Mode of access: Internet.

Religion & art; a study in the evolution of sculpture, painting and architecture,

Translation of: Religione e arte figurata.