President Coolidge autographing a sap bucket (scanned from my original photo).
From left to right: Harvey Firestone, President Calvin Coolidge, Henry Ford, Thomas Edison, Russell Firestone, Mrs. Grace Coolidge, John Coolidge at the Coolidge Homestead in Plymouth, Vermont, August 19, 1924.
BTW, Ford was a Nazi and Edison was a thief. But other than that, a productive lot.