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
Manistique and Lake Superior Railroad Manistique and Lake Superior Railroad The Manistique and Lake Superior Railroad (M&LS) was an American Class III railroad serving the Upper Peninsula of Michigan from 1909 to 1968. It provided service from Manistique, Michigan to a junction with the Duluth, South Shore and Atlantic Railway at Doty, Michigan, southeast of Munising, Michigan. Its nickname was "The Haywire". The M&LS was chartered in 1909 to penetrate what was then a booming lumber and pulpwood region of the central Upper Peninsula. Almost from the start, it served as an affiliate of the Ann Arbor Railroad and was connected with the larger railroad's