1. Maps showing the distribution of copper, lead, and zinc in stream sediments, Sherbrooke and Lewiston 1⁰ x 2⁰ quadrangles, Maine, New Hampshire, and Vermont Yale Public content 1990. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by Map Distribution. English. Public. New England.