1. Maps showing growth of the lava dome at Mount St. Helens, Washington, 1980-1986 Yale Public content 1995. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Information Services. English. Public. Washington (State), Saint Helens, Mount, and Saint Helens, Mount (Wash.).