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Marcus Benjamin (1857–1932) was an American editor, born at San Francisco, California, and educated at the Columbia University School of Mines. After following his profession of chemist for several years, he turned to editorial work.
Dr. Benjamin worked on a number of reference works, as:
From 1896, he was the editor of the publications of the United States National Museum. He was an aide in the office of Naval Intelligence during World War I, and received a decoration by France. He was a fellow of the Chemical Society.