Sadly it is reprehensible individuals such as these who spoil it for the vast majority of genuine researchers and historians for whom access to logbooks and photographs is a tremendous help in piecing together history. The likes of eBay has not really helped matters as it has placed pricetags on such items (often over-inflated, especially for those, as mentioned above, that are not particularly well filled out), invariably putting them well beyond the reach of those who would welcome even a viewing or a photocopy of them for their bona fide work.