Everest Map, Second Edition. A second edition of the National Geographic map of Mount Everest, 1:50,000, will appear in June. It is being published by the Boston Museum of Science and the Swiss Foundation for Alpine Research in Zürich. This edition will have certain changes. Most notable is what appears on the back of the map. There is a full-color enlarged section of the middle portion of the map at a scale of 1:25,000 which shows all the routes climbed on Everest and its satellites from 1953 to 1990. The back of the map also includes all the first ascents of these routes with the names of those who made them and the dates. The exact price and distribution program will be determined by June, 1991. For information, contact Bradford Washburn, Museum of Science, Boston, MA 12114 or Swiss Foundation for Alpine Research, Binzstrasse 27, Zürich, Switzerland.