xxrackellaxx
The Picture of Dorian Gray by Oscar Wilde is a woefully underrated book. I highly recommend it, especially when accompanied by a cup of Earl Grey tea and a sunny afternoon.
I wouldn't say it's "underrated" and much as it simply isn't often mentioned. It's actually very highly regarded in the literary community but it's not exemplary of any movement or genre--except the Wildean novel, which is general put on the back-burner in comparison to the Wildean play--and therefore just doesn't come up often.
Personally, it's one of my favorite books. It's only competition in my heart is A Tale of Two cities.
BUT! My main point...
Neither particularly steampunk except in that they are Victorian British Literature. Which is, I suppose, one of the biggest inspirations for the steampunk movement.