From an email:

“The Mother of all Yard Sales – Great Brookland Yard Sale Day! – Saturday, May 12th

This is going to be a big event with over 60 yard sales all in close proximity to each other. Take this opportunity to visit one of Washington’s best kept secrets (as in places to live). Brookland is metro-accessible (Red Line Metro Stop: Brookland/Catholic University). The forecast calls for a sunny day with temperatures in the 70s, so we expect a great turnout! Please forward this email to anyone you know who enjoys yard sales. For more details, including a map of where the individual yard sales will be held, please visit this website.”