(https://www.nationalgallery.org.uk/paintings/history/collection-history/whereabouts-of-paintings-1933-45)
Fortunately, there is a new url that works.
https://www.nationalgallery.org.uk/about-us/history/collection-history/whereabouts-of-paintings-1933-1945
And, as backup, there is the Internet Archive, where people and bots saved the url 23 times.
