"Winter adventures in the Unknown Yukon" will be the subject of a lecture by Bradford Washburn this evening at 8.15 o'clock in Brattle Hall for the benefit of the Cambridge Tuberculosts and Health Association.

Washburn was the leader of the National Geographical Society's Yukon Expedition which made the first crossing of the great Saint Elias Rauge, and succeeded in erasing from the map one of the last spots of unexplored territory on the continent of North America. Tickets may be obtained at the door for $1.