Letter from Insull, Samuel to Edison, Thomas Alva, December 17th, 1889

http://edison.rutgers.edu/images/eu/eu0506.jpg
http://edison.rutgers.edu/images/eu/eu0507.jpg
http://edison.rutgers.edu/images/eu/eu0508.jpg
http://edison.rutgers.edu/images/eu/eu0509.jpg