Etiquette: The Blue Book of Social Usage by Emily Post, New York and London, Funk & Wagnalls Co, 1922/37.
One may not smoke in a church in a church or during any religious service or during ceremonial proceedings. One may not smoke in a a sickroom. One should not smoke in the room of a convalescent unless the convalescent himself is smoking. Good taste forbids smoking  by a woman on a city street. To these obvious exceptions should be added those in business (regulated by the rules of each firm) and those of consideration for the customs of the community in which you may find yourself, or for the prejudices of the people with whom you personally come in contact.
In other days when it was taken for granted that no well-bred person could ever be late unless for an unavoidable circumstance, the fifteen-minute grace was established to save them from the humiliation of being proved so rude as not to have arrived promptly. But because of the increasing carelessness of certain younger people, there is a decided inclination toward the exaction of promptness by the more important hostesses of today.
Paper for a man
Writing paper for a man should always be conservative. Plain white or cream, or gray or granite, or a deep blue (not turquoise) paper of medium or larger size, and stamped with his address or his initials or for social correspondence with his crest is in good taste.
The practicality of the typewriter has brought about a certain amount of confusion as to the occasions when it may or may not be used for personal letters. It should be made clear, therefore, that a typewritten letter is not only proper but to be preferred in all letter writing of length. It is of course unsuitable for any occasion that is formal.
A man comes into the office at nine sharp; hangs his hat on a peg, and sits down at his desk ten seconds after coming in the front door. A woman comes in just as conscientiously at a minute to nine, goes into the dressing-room and it is anywhere from ten to twenty minutes before she has finished brushing her dress, and fixing her hair, and powdering her nose—and heaven alone knows what!
According to strict rules of established conventions of propriety, divorced people have always been expected to meet as unspeaking strangers, and the reason for the strictness of this convention is that it has never been compatible with ethics that such an upheaval of home and family as divorce, could be considered unless there was irreparable injury or an antipathy that made tranquil encounter impossible.