Charles Ellwood, "Aristotle as Sociologist" in Annals of the American Academy of Political and Social Science 19, No. 2 (March, 1902): 63-74. In this paper on the McMaster University Archive for the History of Economic Thought Ellwood makes the case that Aristotle is the first sociologist and the Politica is a excellent primer for the beginning student of sociology.
Charles Ellwood, "The Origin of Society," American Journal of Sociology 15 (1909): 394-404. In this paper Ellwood argues that social development of human beings is based on natural selection but is to some degree modifiable by education.
Charles Ellwood, "Prolegomena to Social Psychology" Ellwood's four-part introduction to social psychology as first presented in the American Journal of Sociology is presented by Brock University as part of their Mead Project.
American Anthropological Association, The Association's Handbook on Ethical Issues in Anthropology are readings compiled by Joan Cassell and Sue-Ellen Jacoby. See especially Murray L. Wax's " Some Issues and Sources on Ethics in Anthropology" for current approaches and sources.
American Anthropological Association, The Association's Handbook on Ethical Issues in Anthropology