An excellent essay on ragtime-era dancing can be found at the Library of Congress web site. This site also leads to modern reconstruction video clips of ragtime dances such as the maxixe, onestep, and tango. Intelligent reviews of ragtime music can be found at Jack Rummel's ragtime page.
Here are some MP3 files of ragtime dances from our CD Notoriety:
Dances played at our Denver tea dances (see our schedule) include the one-step, two-step, waltz, foxtrot, tango, the half-and-half (five-step waltz), the occasional maxixe, and novelty numbers.
Some lovely images of vintage ragtime and tango dancers can be found at www.vintagedanceimages.com. There is also a service for obtaining reproductions of the artwork.