I don't explore Second Life very often (my first life takes up enough of my time as it is), but there's a vibrant steampunk community going on over there, and they even boast a Miskatonic Valley among its geography. Ooooh, ahhhh.
Steampunk and vaudeville and burlesque all seem to be melding together in some odd fashion, so people interested in steampunk may also like Matt Hoyle's Barnumville photography. I know I do.
And lastly, the rich may just buy "Jeeves Wooster lights" outright, but they look ripe for DIY experimentation among the poorer and punkier of us!
The Library of Congress has a site titled "Chronicling American" which looks at events from the papers of 100 years ago. The entry for March 7, 1909 is taken from Ogden, Utah's Morning Examiner and concerns Count Zeppelin and his amazing machine. Photographs included!
Also at the Library of Congress: some enterprising types have started a Flickr tag called "Great Mustaches of the LOC" and the photos definitely live up to the hype.