So This Is Washington

Chester Lauck Lum Edwards

Norris Goff Abner Peabody

Alan Mowbray Chester W. Marshall

Mildred Coles Jane Nestor - Marshall's Secretary

Roger Clark Robert Blevins

Sarah Padden Aunt Charity Speers

Matt McHugh Stranger in Park Renting 'Rooms'

Brooks Benedict First Hotel Desk Clerk (uncredited)

Chester Conklin Inventor with Pocket Machine Gun (uncredited)

Heinie Conklin Steve Reynolds - Station Agent (uncredited)

Jimmie Dodd Earl - Hick Townsman (uncredited)

Daniel Duncan Melvin Speers - Grandpappy (uncredited)

Ben Erway Congressman (uncredited)

Jack Gargan Reporter (uncredited)

Lloyd Ingraham Inventor with Parachute (uncredited)

Boyd Irwin Senator (uncredited)