Little Harbor is a former settlement in Schoolcraft County, Michigan, United States, on the north shore of Lake Michigan. Little Harbor was located between Garden and Thompson on the Garden Peninsula. It was a steam powered sawmill town founded between 1885 and 1887 by Alfred Tracy and William L. Marble. The entrance to the town is from the southeas…Little Harbor is a former settlement in Schoolcraft County, Michigan, United States, on the north shore of Lake Michigan. Little Harbor was located between Garden and Thompson on the Garden Peninsula. It was a steam powered sawmill town founded between 1885 and 1887 by Alfred Tracy and William L. Marble. The entrance to the town is from the southeast with a narrow passage which leads to a natural twenty-foot deep harbor which is protected from all sides. The land entrance was a stairway that led from the bluff to the town site.