The origins of Graham Media can be traced to 1944, when the "Washington Post" began its broadcasting activities with its purchase of WINX radio in Washington, D.C.. Four years later the newspaper's parent firm, the Washington Post Company, announced its intention to acquire controlling interest in a rival station, WTOP radio from CBS. The two firms formed a joint venture known as WTOP Incorporated, with the "Post" holding 55 percent and CBS maintaining the balance (45 percent). The "Post" sold wholly owned WINX but retained its FM adjunct WINX-FM, which became the original WTOP-FM when the sales became final in 1949. In 1950 WTOP Inc. purchased WOIC, Washington's CBS television affiliate, and changed that station's call letters to WTOP-TV. This "Post"-CBS joint venture is the direct predecessor of Graham Media Group.