Correspondence, Thomas Edison to Charles Steinmetz, March 4, 1916

Letter reads, "Your esteemed favor of the 28th ultimo in regard to my Storage Battery was received, and it has afforded me a great deal of pleasure in the reading of it. I value your opinion very highly indeed, and am deeply gratified to find that it justifies the many years of hard work that I have put into the perfection of this type of battery. I am glad to say that the mild dissipation in which I indulged by attending the Banquet of the Illuminating Engineering Society was more than offset by the honor extended to me by the Society and the good time I had on that occasion."