Duluth, Minnesota four Catholic schools with coverage up to grades 6 or 8, two Protestant schools, two Montessori schools, and six other charter and private schools. Due to its proximity to the Great Lakes, Duluth is the location for the Large Lakes Observatory. The Large Lakes Observatory operates the largest university-owned research vessel in the Great Lakes, the R/V Blue Heron. Built in 1985 for fishing on the Grand Banks, the Blue Heron was purchased by the University of Minnesota in 1997, sailed from Portland, Maine, up the St. Lawrence Seaway to Duluth, and converted into a limnological research vessel during the
Duluth, South Shore and Atlantic Railway winter, the DSS&A had to plow this snow off its tracks. Duluth, South Shore and Atlantic Railway The Duluth, South Shore and Atlantic Railway (DSS&A) was an American railroad serving the Upper Peninsula of Michigan and the Lake Superior shoreline of Wisconsin. It provided service from Sault Ste. Marie, Michigan, and St. Ignace, Michigan, westward through Marquette, Michigan to Superior, Wisconsin, and Duluth, Minnesota. A branchline stretched northward from Nestoria, Michigan up to the Keweenaw Peninsula and terminating at Houghton, Michigan, with two branches extending further to Calumet, Michigan and Lake Linden, Michigan. The first predecessor of the DSS&A began