The second volume in a 10-volume report on the historical development (1966-1973) of the 8 administrative Area Offices of the Indian Health Service (IHS) Mental Health Programs, this report presents information on the Aberdeen Area Office. Included in this document are: (1) Description of the Area (geography of the Area's Western Portion and tribal and cultural background of the woodland tribes and the Sioux reservations); (2) Development of Mental Health Services and Programs: Social Service Branch: 1955-65 (initial programs, Canton National Insane Asylum Aftermath, Flandreau Boarding School Project, and Deputy Social Service Chief for Mental Health); (3) Pine Ridge Community Mental Health Program (1965-66, Pine Ridge Mental Health Program overview, and research bulletin/publication highlights); (4) Expansion from Area Office to Other Service Units (1971-72, consultation model, 1969-73 suicide rates, service unit staffing patterns, North Dakota coordination, Social Service Branch and Mental Health Programs fusion, area-wide program/staff development, and the Bemidji Sub-Area); (5) Overview and Area-Wide Activities (Area Office functions, career ladder development, staff teaching activities, goals and format, and 1973 staff activities survey); (6) Service Unit Capsule Descriptions: 1973; (7) Summary (problems and achievements); (8) Appendices (1969-73 suicide statistics, Mental Health Worker Position Series Proposal, and treatment goals and intervention levels). (JC)