20s/30s/40s or Steampunk Steam backgrounds?

use this - steam.tools/backgrounds/
search filters are really good.

Contrast is the first that came to mind for me.

A golden wake is set in the 20s

Graphic Novel, Star-filled Night, Far Away, Red vs Blue, Gray Matter Background 02 (or other from Gray Matter), all backgrounds from Contrast, also from Jack Orlando (but quality - not well), Seamstresses Union, Arkham City by Night
For sadly, good "steampunk" or "noir" themes in steam - not found yet.

Ran through all the hits for "steampunk" in Steam's search on the card exchange and didn't find much that was very promising, other than a couple Mirajna already posted. "The Hideout" from Thief isn't too bad for some blue-hued literal clockwork.
It's a shame The Saboteur isn't on Steam for some good 30s/40s european looks.
Omerta seems to have some good ones. Very noir.

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Skullgirls, maybe?
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