To develop an effective combined cognitive therapy (CT) plus drug treatment for patients with drug-resistant depression (DRD) (i.e., depression that is refractory to medication). To develop a manual for combined treatment for DRD that integrates three existing forms of CT (CT for depression, CT for personality disorders, and CT for anxiety disorders), and that specifies interventions for combining CT and medication when two therapists (psychotherapist and pharmacotherapist) provide the treatment. To obtain outpatient, randomized control, pilot data on the clinical value of the combined CT plus drug treatment, using the standard antidepressant desipramine (DMI), to obtain effect sizes and to determine if the treatment merits further investigation in a clinical trial. To develop a therapist adherence measure for the combined treatment.