Just noticed Paul's remark about copyright on the P&V catalogue mentioned on my website. A catalogue is held by the Winterthur Library, Delaware. They will copy up to 20 pages from it for a fee, but retain copyright, so that's why I can't show them. Note that they are putting the full 1881 catalogue, and a large number of others (mostly American) on the Internet Archive website within the next year or two, then everyone gets to see them!