It serves over 600 member agencies across 1,200 offices, which control more than 85% of total U.S. advertising spend.
[1] In December 1917, the Division of Advertising of the Committee of Public Information office opened under the organization's auspices, with a government charter to coordinate all wartime campaigns, including advertising for the U.S. Army, U.S. Navy, liberty bonds, victory loans, and the Red Cross.
[1] In 1998, it opened up its membership to marketing communications companies in addition to advertising agencies.
[3] Its D.C. office, which opened in 1969, "monitors federal and state government activity and works to protect agencies and the advertising industry against burdensome legislation and taxation".
[6][7] In Mad Men S5.e12, "Commissions and Fees", Lane Pryce is offered an unelected chairmanship of the organization's fiscal control committee after SCDP wins the Jaguar Cars account.