Conclusion: Same as a governor.
Social letter begins: My dear Mayor Rockwood or Dear Mr. Rockwood.
Conclusion: Same as a governor.
Inscription on envelope: His Honor the Mayor of Cambridge, Wendell D. Rockwood.
CLERICAL TITLES
The Pope—His Holiness Pope Benedict XV.
To a Roman Catholic Archbishop, an official or a social letter begins: Most Reverend and Dear Sir.
Conclusion: I have the honor to remain your humble servant.
Inscription on envelope: The Most Reverend John J. Keane, Archbishop of Dubuque, Iowa.
To A Cardinal, whether official or social, a letter begins: Your Eminence.