The New York Times wrote a nice article about the Superheroes in Gotham exhibit at the New York Historical Society with a number of pictures. In the next to last image you can see one of the Batman set design paintings on the left - it is The Penguin's Sub painting:

 

 

Also The Village Voice and The Guardian feature an image of The Penguin's Sub in their articles about the exhibit:

 

Village Voice:

 

 

The Guardian:

 

 

All three set design paintings are shown briefly in a NYC CBS station news clip: