The Brassworks Band, based in San Francisco, and regulars at the Dickens Christmas Fair, have produced a couple of CDs with a good deal of dancable material. Their recordings can be found at http://www.brassworksband.com/recordings.html

The Americus Brass Band is a local, Southern California band with a fine, American sound. Unfortunately, their one totally dance-focused recording, "19th Century Grand Ball", which was produced many years ago in concert with Desmond Strobel, our late Dance Master at the Social Daunce Irregulars, has not been released on CD. Perhaps if enough people pester them, they will finally get around to it.

Here's their website: http://www.americusbrassband.org/

Their existing titles contain some dance music, but also contain "concert pieces"

Music of the Civil War

The Dodge City Cowboy Band

Buffalo Bill's Cowboy Band

Spare Parts is a band based in the Northeast, that specializes in Victorian and early 20th Century dance.
Their titles, as far as I can tell are

The Civil War Ballroom

American Period Dance

Tango Viejo

Now Tango

They have a website at http://www.bfv.com/spareparts/

If you are looking for a band that does "Californio" music, of the sort you might hear in a Fandango before the American conquest, I would suggest "Los Californios". Their music is steady and well suited to dancing.

Here's their website: http://www.loscalifornios.com/

As if to prove that it is possible for a "big time" concert band to actually do good dance music, the Eastman Wind Ensemble put together a CD called "Homespun America", which contains a lot of good dance stuff as well as some swell 19th Century American kitsch.

You can get it on Amazon

If you want to venture overseas, the French have produced some good dance CDs. These contain some good Set Dance stuff, which is, unfortunately not as well represented as it should be in the above selection (with the exception of Spare Parts).

I would recommend the work of the "Carnet de Bal" folks. I own two recordings, and am very intrigued by a third. They can be purchased at http://www.lmacboutique.com/home.php

If your French is a little rusty, click the British flag in the upper right for an English language version of the site. The recordings I own are "Le Bal Du Kiosque a Musique" and "Carnet De Bal".

There is also one there called "Bal des Citoyens" which says it is the contra dances of the French Revolution. I just bought it, and look forward to listening. I wish we had it a few years ago for the "Scarlet Pimpernel's Ball". With shipping, it came to $23, which is a bit steep for a CD, but given the sorry state of the Dollar vs. the Euro, not to be wondered at.

These are the recordings in my own collection. I am sure there are some good ones out there I just haven't heard about. If you want to add your favorite to the list, please do so with the "comments" tool. Also, please give a URL where it can be obtained.