United States Department of the Interior Geological Survey
Date Created:
1957
Description:
Boulder Lake Reservoir NE quadrangle topographic map (N4707.5-W9200/7.5) featuring handwritten notations by Ray Segar in red ink and pencil regarding logging railroad lines and camps in the area south of Markham. The hand written notations include information on the following: Duluth, Northeastern Railroad (DNE) line.