John D Mangum postmaster of Marquette Marquette County Michigan and a prominent and representative citizen was born in 1859 at Jackson Michigan and is a son of the late JD Mangum who was a native of Connecticut and a farmer by occupation. Our subject's mother who was a native of Ireland is still living.
John D Mangum was reared at Jackson and was educated there in the common and high schools. In that city he entered the employ of SA Welling in the wholesale men's furnishing goods line and later engaged in the same at Grand Rapids Michigan. Later he went on the road for Mr Welling and for other houses and traveled for 12 years through the Northern Peninsula. About 1895 Mr Mangum located at Marquette Marquette County Michigan. He is largely interested in timber lands mainly in the valuable hardwoods and cedar both in Marquette and other counties. Mr Mangum is treasurer of the Chocolay Land Company which controls some 4500 acres which company was organized in 1902 with Dr EH Flynn as president and Carl Wittier secretary. Mr Mangum is also a director of the Northern Land Company Limited. Some eight years ago Mr Mangum assisted in the organization of the Johnason Clothing & Shoe Company which is now one of the prosperous business concerns of the city and which he has admirably managed.
Mr Mangum has been a prominent useful and popular citizen of Marquette and served as mayor in 1901. On February 28 1902 he was appointed postmaster of Marquette by President Roosevelt an appointment which met with general approval. Fraternally Mr Mangum belongs to these organizations Benevolent & Protective Order of Elks Knights of the Maccabees Ancient Order of United Workmen and Royal Arcanum. In religious faith he is a Catholic.
BIOGRAPHICAL RECORD HOUGHTON, BARAGA AND MARQUETTE COUNTIES , 1903. Google Books.