From Washington: Take Pennsylvania Avenue SE through Capitol Hill and out of the District. Pennsylvania Ave will become MD Rte 4; after passing under the Washington Beltway continue on Rte 4 for 20 miles. Turn right on Chaneyville Road, proceed 4 miles to Lower Marlboro. You will come to a 4-way stop - as you are sitting at the stop sign the house is on your right. (!!Your GPS may tell you to take Flint Hill Road off of Chaneyville - but it does not go through! Stay on Chaneyville all the way to the house!!)
From Baltimore: Take Exit 4 on the Baltimore Beltway (Rte 695) to I-97; go 10 miles to MD Rte 3 South, which becomes US Rte 301 South. Follow 3/301 for 20 miles and exit onto MD Rte 4 south. Follow Rte 4 South to Chaneyville Road, continue as above.