The relationship between GallĂ©, Burgun Schverer et Cie, & DĂ©sirĂ© Christian is described in Arwas (1996) The Art of Glass, pp. 19-26. (see Here
) Sadly no direct reference is given but Traubâ€™s work is not included in the bibliography.
Arwas suggests that DĂ©sirĂ© Christian was to work 'in accordance with with GallĂ©'s specific and detailed drawings, moulds and instructions.' (Arwas 1996, p.22). I would have thought this to be fairly normal prcatice, particularly, as, according to Arwas, GallĂ© had had a relationship with Meisenthal dating back to 1864.