Which President Was Sworn In On a Catholic Missal Instead of a Bible?

Surprise answer is here.

+ U Catholic: When George Washington took office as the first President of the United States on April 30th in 1789, he swore his constitutional oath on a Bible.

Since setting the precedent, nearly all presidents have also taken their oath on the Bible – one of few exceptions being when a Roman Missal was used instead. More here.