Lewis Latimer did not write the first book on electric lighting!

Latimer's book is this 1890 publication:

Incandescent electric lighting: a practical description of the Edison system.
Author: Latimer, Lewis Howard, 1848-1928.; Field, C. J.; Howell, John White
Publication: New York, D. Van Nostrand Co., 1890

There were plenty of books on electric lighting were published before that, among them the following:

BEFORE 1890

• Arc and glow lamps; a practical handbook on electric lighting.
  Author: Maier, Julius.
  Publication: London, Whittaker [etc.] 1886
• Electric illumination.
  Author: Dredge, James, 1840-1906, ed.; Cooke, Conrad William,; O'Reilly, Michael Francis,, and others
  Publication: London, New York, Offices of "Engineering"; Wiley 1882
• Electric lighting by incandescence, and its application to interior illumination. A practical treatise.
  Author: Sawyer, William Edward.
  Publication: New York, D. Van Nostrand, 1881
• The elements of electric lighting, including electric generation, measurement, storage, and distribution.
  Author: Atkinson, Philip.
  Publication: New York, D. Van Nostrand, 1888
• A practical treatise on electric lighting.
  Author: Gordon, James Edward Henry, 1852-1893.
  Publication: New York, Appleton, 1884
• Éclairage a l'électricité : renseignements pratiques /
  Author: Fontaine, Hippolyte, 1832-1910.
  Publication: Paris ; Liége : Librairie polytechnique : J. Baudry, libraire-éditeur ..., 1879
• The electric light: its history, production, and applications.
  Author: Alglave, Emile, 1842-; Boulard, J.,; Sloane, T. O'Conor, and others
  Publication: New York, D. Appleton and Co., 1884
• The principles and practice of electric lighting.
  Author: Swinton, Alan Archibald Campbell, 1863-1930.
  Publication: London, Longmans, Green, 1884
• The electric light in its practical application.
  Author: Higgs, Paget.
  Publication: London, New York, E. & F.N. Spon, 1879