Ed O'Neill, who plays Jay Pritchett, actually did invent a sandwich, it's called the "Boone," at the famous Se-Port Deli in Setauket, New York.
The Norman Rockwell painting Alex chooses to portray with her family is called 'Freedom From Want'. It's one of a quartet he did to depict the Four Freedoms cited by FDR in his 1941 State of the Union speech.