Well then you're in luck! Or will be in 2011. Just since May of this year I've been asked by six different authors/editors/publishers to include photos of my steamy gas masks, helmets, etc. in their publications. Six! Next year is shaping up to be a banner year for steampunk art books.
Here are several of them:
The Art of Steampunk: Extraordinary Devices and Ingenious Contraptions from the Leading Artists of the Steampunk Movement
Steampunk: Victorian Futurism