Emily Post was an American author and socialite, best known for her books on etiquette. Born in 1872, she became a prominent figure in the early 20th century, shaping social norms and manners through her writing. Her most famous work, "Etiquette in Society, in Business, in Politics, and at Home," was first published in 1922 and has been updated multiple times. Post's influence extended beyond her books; she founded the Emily Post Institute, which continues to promote etiquette and social skills today. Her legacy remains significant, as her guidelines on manners are still referenced in discussions about proper behavior in various social contexts.