Bobby Stevens' wife on the Rock Creek Trestle, Mar 1942
Mr. Duvall maintains that this is a photo by Bobby Stevens, a native of Chevy Chase and a professional ballplayer for 1 season in Philadelphia. View is East.
UPDATE 4/6/2020: Had to look up the position of the sun that month to verify the direction of the camera. Indeed, view is East. https://www.suncalc.org/#/38.9972,-77.0632,14/1942.03.01/13:56/1/3