The fifth volume of The Papers of Thomas A. Edison covers Edison's invention and development of the first commercial incandescent electric light and power system. In the process he turned his famed Menlo Park laboratory into the first true research and development facility. This also enabled him to develop a new telephone for the British market in the midst of his herculean efforts on electric lighting.

In the face of daunting technical challenges and skepticism from leading scientists and engineers, Edison and his team of experimenters and machinists found the solution to the...

Two decades after the American Civil War, no name was more closely associated with the nation's inventive and entrepreneurial spirit than that of Thomas Edison. The restless changes of those years were reflected in the life of America's foremost inventor. Having cemented his reputation with his electric lighting system, Edison had decided to withdraw partially from that field. At the start of 1885, newly widowed at mid-life with three young children, he launched into a series of personal and professional migrations, setting in motion chains of events that would influence his work and...