Joan meets with students at her home office and her Cabin John office:
33 Flints Grove Drive, North Potomac, MD, 20878
Directions from I-270 headed north from 495:
Take exit 6B – Route 28 West towards Darnestown
Continue for approximately 3 miles and turn left onto Muddy Branch Road (name changes to Dufief Mill)
Take the fourth possible right onto Flints Grove Lane
Take the fourth possible left onto Flints Grove Drive
Turn into the third driveway on the left--#33 is the house at the top on the left
6500 Seven Locks Road, Cabin John, MD 20818: