Georgetown
My memory of the movie is watching Hitchcoc one Sunday afternoon in Georgetown shoot a very brief scene. Actually he never got out of his car, but there was a mob of people gathered to see The Master at work.
John Forstyhe sat at the curb on O St while a woman walks her dog and another actor comes out of a house carrying two suitcases. Forsythe was gracious and signed autographs. I got two shots of Hitch in his car from his right side, but you had to take my word for it that he was inside the car. Unfortunately, I lost the photos years ago.