Book excerpt: Essential Papers on Depression gathers the classic articles on the subject of depression. It includes pieces by such core figures as Karl Abraham, Sigmund Freud, Frieda Fromm-Reichmann, Martin E. P. Seligman, Aaron T. Beck, and George Winokur. The volume is broken into four parts: Psychodynamic Approaches; Behavioral and Cognitive Approaches; Interpersonal and Social Approaches; and Biomedical Approaches. Contributors: Karl Abraham, Lyn Y. Abramson, Ross J. Baldessarini, Aaron T. Beck, Ernest S. Becker, Andrew G. Billings, George W. Brown, Mabel Blake Cohen, David L. Dunner, Sigmund Freud, Frieda Fromm-Reichmann, Marie Kovacs, Peter M. Lewinsohn, William R. Miller, Rudolf H. Moos, David Rapaport, Lynn P. Rehm, Lenore Sawyer, Martin E. P. Seligman, and George Winokur.