As Tor has made this Steampunk month, I figured it's a great time to post my steampunk endcap/reading list. Again, this isn't the most comprehensive list you can find. I purposely avoided books I didn't consider steampunk (the definition for steampunk seems to be broader than I've ever considered with books showing up in searches that I would call time travel or cyberpunk books). Anyway, here's my list.
Soulless - Gail Carriger
Affinity Bridge - George Mann
Clockwork Heart - Dru Pagliassotti
Whitechapel Gods - S.M. Peters
Extraordinary Engines - Nick Gevers, Ed.
Court of the Air, Kingdom Beyond the Waves, Rise of the Iron Moon - Stephen Hunt
Swiftly - Adam Roberts
Mainspring, Escapement - Jay Lake
Boneshaker - Cherie Priest
Difference Engine - William Gibson & Bruce Sterling
Steampunk - Ann & Jeff Vandermeer, Ed.
Homunculus - James Blaylock
Light Ages - Ian MacLeod
Mortal Engines, Infernal Devices, Predator's Gold - Philip Reeve
Leviathan - Scott Westerfeld