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EDISON AT WORK IN ONE OF THE CHEMICAL ROOMS AT THE ORANGE LABORATORY

EDISON WHEN ABOUT FOURTEEN OR FIFTEEN YEARS OF AGE

MR. EDISON AT THE CLOSE OF FIVE DAYS AND NIGHTS OF CONTINUED WORK IN PERFECTING THE EARLY WAX-CYLINDER TYPE OF PHONOGRAPH—JUNE 16, 1888

THE EDISON ELECTRIC RAILWAY AT MENLO PARK—1880

EDISON AT THE OFFICE DOOR OF THE ORE-CONCENTRATING PLANT AT EDISON, NEW JERSEY, IN THE 'NINETIES

THOMAS ALVA EDISON—1911

"THE INSOMNIA SQUAD"

EDISON AT WORK ON RUBBER EXPERIMENTS. FROM A MOVING PICTURE TAKEN DECEMBER, 1928