Jack - thanks for doing the research. I'll be at seblais(at)stearnswheler(dotcom) until about noon today (Eastern Daylight Time). After that, I'm on the road.
This won't help you this week, but I got an e-mail notice of regular Cajun jams in Silver Spring. Here is the info, including contact info, for your next visit:
June 27 Wednesday Cajun Jam
@ Los Arrieros: 7926 Georgia Ave, Silver Spring 20910
Parking in Rear Lot off Blair Rd. and on Georgia Ave.
(specializing in Dominican, Columbian, and Mexican cuisines)
For dancers, musicians, and listeners who enjoy Cajun music.
Beginners welcome.
Free : 7:30 -10:30pm
FFIC: swopes123@aol.com