Question: Painting by Eugenio Tanò

Does anyone know where I can find a photo of the following painting by Eugenio Tanò: Inaugurazione degli scavi di Ercolano fatta dal Re (1878). It's in the Capodimonte Museum, Naples, but I haven't been able to find a photo of it anywhere, either on-line or in books. If anyone can provide a reference or has a copy they can pass on I would be very, very happy!