On this day in Duluth in 1931, the Duluth News-Tribune announced that Duluth’s Aerial Lift Bridge would become “the nation’s experimental station during the shipping season of 1931 when city commissioners will seek development of a system to warn bridge tenders of approaching ships in a storm or fog.” Various companies were invited to experiment…

On this day in 1846, future Duluthian Captain Joseph Sellwood was born in Cornwall, England, where he earned his title working in the mines in his native land beginning at the tender age of nine years old and, later, in Michigan’s Upper Peninsula where he mined copper. After partnering in several mining operations in Michigan…