Three psychiatrists and a consulting psychologist investigated mental health problems in the Yukon and Northwest Territories. Specific purposes of the investigation were (1) to comment on the adequacy of existing mental health services and facilities, (2) to make recommendations for improvement of consulting services and facilities, (3) to consult with territorial legal advisers concerning legislation which would be required to expedite a legally adequate mental health service to both territories, and (4) to consider those factors in the Canadian North that prevent the achievement of maximum mental health and to discuss the means by which such factors could be eliminated. Factors affecting mental health are described in the report under social factors, economic factors, personality characteristics, and geography and climate. An attempt is made to identify factors affecting the non-native and the native Indian and Eskimo populations. Recommendations are given in the areas of administrative organization, facilities, children's services, primary prevention, and research. Appended are lists of meetings, briefs, and reports. (JH)