(en) Robert M. Vogel, « Elevator systems of the Eiffel Tower, 1889 », United States National Museum Bulletin, Washington, Smithsonian Institution, no 228, , p. 4 (lire en ligne)
jstor.org
(en) Frank I. Jenkins, « Harbingers of Eiffel's Tower », Journal of the Society of Architectural Historians, University of California Press, vol. 16, no 4, , p. 25-27 (JSTOR987874, lire en ligne [PDF])
mcgill.ca
arch.mcgill.ca
(en) Frank I. Jenkins, « Harbingers of Eiffel's Tower », Journal of the Society of Architectural Historians, University of California Press, vol. 16, no 4, , p. 25-27 (JSTOR987874, lire en ligne [PDF])