Relations and publicity" was published by J.H. Brebner. The Foundation for Public Relations Research and Education (now the Institute for Public Relations) was founded in 1956. The International Association of Business Communicators was founded in 1970. Betsy Ann Plank is called "the first lady of public relations" for becoming the first female president of the PRSA in 1973. Two of today's largest PR firms, Edelman and Burson-Marsteller, were founded in 1952 and 1953 respectively. Daniel Edelman created the first media tour in the 1950s by touring the country with "the Toni Twins," where one had used a professional salon and the other had used Toni's home-care products. It was also during this period that trade magazines like PR Week, Ragans and PRNews were founded. John Hill, founder of Hill & Knowlton, is known as the first international PR pioneer. Hill & Knowlton was the first major U.S. firm to create a strong international network in the 1960s and 1970s. Both Edelman and Burson-Marsteller followed Hill & Knowlton by establishing operations in London in the 1960s and all three began competing internationally in Asia, Europe and other regions. Jacques Coup de Frejac was influential in persuading U.S. and UK companies to also extend their PR efforts into the French market and for convincing French businesses to engage in PR activities. In the early 2000s, PR in Latin America began developing at a pace "on par with industrialized nations." According to The Global Public Relations Handbook, public relations evolved from a series of "press agents or publicists" to a manner of theory and practice in the 1980s. Research was published in academic journals like Public Relations Review and the Journal of Public Relations Research. This led to an industry consensus to categorize PR work into a four-step process: research, planning, communication and action. Social and digital During the 1990s specialties for communicating to certain audiences and within certain market segments emerged, such as investor relations or technology PR. New internet technology and social media websites effected PR strategies and tactics. In April 1999, four managers from IBM, Sun Microsystems, National Public Radio and Linux Journal created "The Cluetrain Manifesto." The Manifesto established 95 theses about the way social media and internet technologies were going to change business. It concluded that markets had become "smarter and faster than most companies," because stakeholders were getting information from each other. The Manifesto "created a storm"