Long before. StreetSwing's historical archives place their origins in the 40's and 50's (http://www.streetswing.com/histmain/z3ecs1.htm and http://www.streetswing.com/histmain/z3wcs1.htm). As for the waxing and waning of popularity, I'm not up on that aspect, being somewhat of a new-comer myself. Seems to me that the 80's might have been a boom time for WCS. Not leave, but maybe visit. Somebody -- on this forum, I think -- once commented that we dance Lindy in order to feel like a kid again, but then return to WCS to be adults again.