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Houston, Edwin J., “Electricity One Hundred Years ago and To-day,” The W. J. Johnston Co., New York, 1894.
Houston and Kennelly, “Electric Arc Lighting,” McGraw Publishing Co., New York, 1906.
Hutchinson, Rollin W., Jr., “High Efficiency Electrical Illuminants and Illumination,” John Wiley & Sons, New York, 1911.
Maier, Julius, “Arc and Glow Lamps,” Whittaker & Co., London, 1886.
Pope, Franklin Leonard, “Evolution of the Electric Incandescent Lamp,” Boschen & Wefer, New York, 1894.
Solomon, Maurice, “Electric Lamps,” D. Van Nostrand Co., New York, 1908.
Transcriber’s Notes
Punctuation, hyphenation, and spelling were made consistent when a predominant preference was found in the original book; otherwise they were not changed.
Simple typographical errors were corrected; unbalanced quotation marks were remedied when the change was obvious, and otherwise left unbalanced.