Edison: His Life and Inventions is the great authorized biography: the newsboy-telegrapher’s rise, the Menlo Park ‘invention factory’, and the campaigns — phonograph, incandescent light, power systems, motion pictures — told with direct access to Edison, his notebooks and his lieutenants.
It is long because the life was; few books carry more of the age of electricity inside them. Download the free EPUB and move into Menlo Park.