Original vintage mining magazine ad, MINE SAFETY APPLIANCES COMPANY of Pittsburgh, PA.  See The New Edison Mine Lamps Models F and G At The American Congress Exhibit in Cincinnati, May 7-11, 1928.  The Battery is the Only Source of Illumination in a Mine Lamp.  To have Dependable illumination, you must have a Reliable and Economical Battery.  The Edison Nickel-Iron Alkaline Battery is noted for its Rugged Construction, Low Maintenance Cost and Life Life - Ten Years of Trouble-free Service.  Old 1928 dated mining industry advertisement.

Approximate page size  9 x 12 inches.