This document provides a history of public relations from ancient Greece to modern times. It discusses how PR has evolved from techniques used by figures like Ramses and Julius Caesar to disseminate information, to the more formal practice developed in the 17th century. Important early PR practitioners and their contributions are outlined, including Ivy Lee who established principles of truth and access to management, and Edward Bernays who developed concepts around interpreting clients to the public and building public conscience. The key differences between PR and advertising of identification of sponsors and paying for placement are also summarized.