McCann acquires 21-year-old Marschalk & Pratt, first time major agency will run specialized agency as a division.
1955 JWT buys Philippine Advertising Associates. Opens office in Manila, touching off overseas expansion.
1956 BBDO didn't go far to open its first non-U.S. office, in Toronto.
FCB adds new Edsel division of Ford Motor Co. Plans to open 11 regional offices to service the car account.
1957 Ruthrauff & Ryan merges with Erwin, Wasey & Co.: "Biggest merger in history of advertising business so far," with combined billings of $73 million.
1958 For first time, AA ranks agencies headquartered in other countries. Japan's Dentsu is No. 1 with $101.3 million in billings.
McCann resigns Chrysler Corp. to accept General Motors Corp.'s Buick.
1959 Carl Spielvogel joins McCann from post as advertising news columnist at The New York Times.
1960 McCann creates Interpublic holding company for advertising and related service companies, major step in evolution of agency business.
1961 McCann joins with Hakuhodo in Tokyo, first U.S. joint venture in Japan.
Rosser Reeves, chairman of Bates, publishes "Reality in Advertising," which hits best-seller lists.
1962 Stanley Resor, who helped build JWT, dies.
1963 FCB goes public, offering 500,000 shares of Class A common stock at $15.50 a share; quickly oversubscribed.
Interpublic acquires Fletcher, Richards, Calkins & Holden and Erwin Wasey, Ruthrauff & Ryan; biggest acquisition thus far.
1964 For first time, AA's lead ranking based on worldwide billings; leader is JWT with $496.1 million.
1965 Doherty, Clifford, Steers & Shenfield, New York, merges with Needham, Louis & Brorby, Chicago, forming Needham, Harper & Steers with Paul Harper in leadership role.
Ogilvy & Mather International formed by merger of Ogilvy, Benson & Mather in the U.S. and Mather & Crowther in England.
1966 Grey breaks into top 10 for first time, adding Ford corporate account billing $10 million and Lorillard's Kent cigarets at $14.5 million.
1967 Burnett buys D.P. Brother & Co., Detroit (brings Oldsmobile account).
Wells, Rich, Greene posts billings of $41.8 million in first full year, including new client American Motors.