4423 Alton Place, NW Washington, D. C.
- Year Built: 1909
- Architect: Tom Giles
- Built By: Fred Robey
John T. Duvall’s house was built in 1909 at 4423 Alton Place.
It was designed by Tom Giles and built by Fred Robey.
John Duvall’s wife was Effie Robey, daughter of the Robey family patriarch James W. Robey.