The executive summary is the first section of this final report of the evaluation of the ATS-1 medical communication system in Alaska. The second section introduces the background of these studies and the sociogeographic setting and health situation of the Alaska natives. The third section presents the main research findings about both the aides-to-doctor and doctor-to-doctor exchanges, about use of the system for medical education, and about its social impact on Bush Alaska. A fourth section is devoted to a cost analysis of alternative systems and recommendations. The attachments (charts, tables, data gathering instruments, etc.) comprise a fifth section. (WCM)