1. Geologic map of surficial deposits in the Seattle 30ʹ x 60ʹ quadrangle, Washington [microform] Yale Public content 1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; Books and Open-File Reports Section, distributor. English. Public. Washington (State) and Seattle Region.