We are just temporary occupants of this office

When U.S. Presidents write to their successors

Envelope labeled “44” containing the transition letter from President George W. Bush to President Barack Obama, waiting on the Resolute Desk in the Oval Office, January 20, 2009 (Photo: George W. Bush Library)

On this day in 1989, Ronald Reagan sat down to write a letter that would spark a lasting and significant tradition among U.S. Presidents. Left on …