This section is from the book "Hill's Manual Of Social And Business Forms: A Guide To Correct Writing", by Thos. E. Hill. Also available from Amazon: Hill's Manual Of Social And Business Forms: The How-To-Do-Everything Book Of Victorian America.
In paying your respects to the President of the United States, you will be introduced by the master of ceremonies on public occasions. At other times, to send in your card will secure you audience, although the better way is to be introduced by a mutual acquaintance, or a member of Congress. Introductions at Court in foreign countries are accompanied by a good deal of formality. At the English Court, the stranger, having the credential of the American Ambassador, will be introduced, if a lady, by a lady; if a gentleman, by a gentleman. Elsewhere abroad the proper method in each case can be best learned from our national representative at each capital. Court etiquette requires that the lady appear in full dress, and the gentleman in black suit, with white vest, gloves and necktie.