Jacques Goudstikker was one of the extraordinary art dealers who would of course be in a book about all of them. Here is a long New York Times piece about him This notebook, with an alphabetical list of many of the 1,400 artworks he left behind in Holland, was found on his body when he died in a tragic accident in May 1940. In 2010 his granddaughter gave an excellent lecture about her grandfather and the struggle to recover the looted artwork from the Dutch government here: it is rather mesmerising.