SCIENTIFIC AMERICAN, New York, January 22, 1898  The front cover is a large print captioned: "The Edison Magnetic Concentrating Works - The Giant Rolls" with additional illustrations & text inside. Also inside: "An Improved Telephone Transmitter" "The King Gasoline Launch Engine" "The Mietz & Weiss Kerosene Engine"  and many more articles, prints & photos.
Sixteen pages, 11 by 16 inches, very nice condition.