The adult vocational training received by Indians under Public Law 959 was evaluated to determine benefits of institutional training programs and to develop manpower policy recommendations. Criteria of the evaluation included employment experience, income, labor force attachment, and benefit cost ratio. Of the approximately 670 Indians who received adult vocational training, information was obtained for 220 from school files and by mailed questionnaire. Some trainee characteristics were: (1) The average trainee was better educated than the average Indian, (2) The employment and income levels were low by most standards, (3) There was a fairly high noncompletion rate among the trainees, and (4) There was some indication that the questionnaire response rate was partially affected by the cultural and historical background of the trainees. Conclusions were: (1) Completion of training results in an average increase in income of $1,929, (2) The average increase in employment was about 3 and one half months of additional employment, and (3) The social benefit cost ratio was found to be 2.39. This dissertation was submitted to Oklahoma State University. (DM)