An archive of materials documenting the development of the understanding and treatment of Post Traumatic Stress Disorder in the first decade after the end of the Vietnam war, when the symptoms of the syndrome were first becoming evident. Materials shed light on the development of a methodology for addressing a catastrophic psychological syndrome that appeared in the aftermath of what was, up to that point, the longest war in American history. The archive consists of Smith's research materials; diagnostic and clinical tools developed for identifying PTSD; original papers by Smith and others on issues involved with Vietnam service and PTSD, including Smith's testimony before Congress on the subject; and treatment notes, including group therapy ("rap group") accounts and other clinical papers. Also included are a carbon transcript of a discussion between several researchers, including Smith, on the establishment of a task force for defining catastrophic stress reactions, and a heavily edited draft of a paper by two of them - Smith and Chaim Shatan, a MD who specialized in Vietnam veterans' postwar psychological problems - that emerged from their study. Also includes a four-volume training manual for Operation Outreach, a Veterans Administration program for treating PTSD in Vietnam vets; research materials Smith found relating PTSD to earlier wars' problems of "shell shock" and "combat fatigue" and the military's treatment strategies for them over the previous 50 years; the author's military records, as well as a number of plaques he earned for his work; and the books he collected or were given to him.