I posted some very well documented information of the well-studied phenomena about pedophile "collections" of child porn and child erotica. Please note that erotica is not illegal and normal people don't find it erotic.
Anne Gheddes does beautiful photography of infants and toddlers. Many people own some of her work (I do). It isn't illegal or erotic. But pedophiles think and act otherwise.
My questions about the nature of his non-pornographic collection are valid. There has been not one peep concerning child erotica, hopefully because there is none. But if there is, you can bet there will be expert testimony to the psychosexual implications of such.