cf. R. Niggl, Eckart Muthesius, The Maharaja's Palace in Indore 1930, Stuttgart, 1996, pp. 88-89 for a period photograph of a light of this model in the study of Dr. Marcel Hardy at the Maharaja's Palace, p. 108, fig. 109 for another wall light of this model, p. 114, fig. 126 for a drawing of this model.