The 'visit source' button links to an Amazon listing of Penrose's book
It links to his author page. Are you able to tell if the journal images are all taken from a book? Which book? There are multiple books on the Amazon page.
Good point, sadly i have no idea
Yea, as the other person mentioned, it just links to his Amazon author page. I have several of his books already and am not aware of any such journal photos.