Yukon Exploration 1991 consists of three parts: Part A is a comprehensive overview of mining and exploration activity in Yukon, Part B summarizes the activities of the Exploration and Geological Services Division (EGSD) of the Northern Affairs Program, Yukon Region, and Part C documents significant new or previously unpublished information based on property visits by EGSD staff and affiliated geoscientists. Each geological paper in Part C is searchable as a separate metadata record.