So, I went to the "Superheroes Never Die. Comics and Jewish Memories" exhibition at the Jewish Museum of Belgium yesterday. It was as good as I had hoped, linking the origins of the American comics tradition with the authors' experience of immigration and integration.
There is a particularly interesting moment from 1940 when Superman, taking Adolf Hitler captive, threatens him with "a strictly non-Aryan sock on your jaw".

It was also a bit chilling to see America's knowledge of Belgium in the first world war reflected in a comic of 1914.

There is lots of lovely art.

Also, Batman and Robin now have competition.

You have plenty of time to catch it – it's on until 26 April (my birthday). It's at Rue des Minimes 21, just off the Grand Sablon.
It’s not definitely a novella, because the administrator has discretion to move the boundaries by up to 20% if it seems appropriate, and 33,000 words is thus within the allowable margin for discretion.