Alfred von Martin (1882-1979) was a German sociologist and distinguished cultural historian known for his work on the sociology of the bourgeoisie. Wallace K. Ferguson (1902-1983) held the J.B. Smallman Chair in History at the University of Western Ontario, SUA. Gertrud Lenzeris professor of sociology at Brooklyn College and the Graduate Center of New York, USA . Her writings include Auguste Comte and Positivism and Sociology and Religion.