It is not known whether Herrmann or the others bought the illusions directly from LeGrand or from another source, but they willingly performed the illusions after knowing that they were invented by Robert-Houdin.
Whether Herrmann bought the illusions directly from LeGrand or from another source. This was what it is not known. The others bought the illusions directly from LeGrand or from another source. This was what it is not known. They willingly performed the illusions after. They were invented by Robert-Houdin. This was what they was knowing.