Edison lamp shed light on phonographs. Terry and Kim Kovel King Features Syndicate. Phonographs were invented in 1877. The early versions had one needle for recording and another needle for playing.

Edison's lightbulb moment: Designs drawn by inventor Thomas Edison to improve his first ever electric lamp go up for sale for £90,000. Inventor worked on illustrations while on honeymoon with ...

Trade catalogs from Edison Lamp Works of General Electric Co. Smithsonian Libraries. Addthis Share Tools ...