Crosby Marketing Communications (Crosby) is a privately owned integrated communications agency with headquarters in Annapolis, Maryland and offices in Washington, D.C. The company was founded in 1973 by Ralph Crosby and is currently run by his son, Raymond Crosby. Crosby provides advertising, public relations, social media, and digital marketing services with a focus on serving federal government, nonprofit, and healthcare clients. Crosby is a member of the American Association of Advertising Agencies and the PR Council. The company was founded in 1973 by journalist Ralph Crosby. After starting out as a public relations firm named PR Associates, the company changed its name to Crosby Communications in 1982, and then to Crosby Marketing Communications as the firm expanded into broader marketing services. In 2004, Crosby acquired Low + Associates, giving the company an expanded presence in Washington, D.C. By 2012, The Washington Business Journal ranked Crosby as the 3rd largest advertising agency in the Washington Metro area. In 2015, J.R. O'Dwyer Company ranked Crosby the 35th largest independent public relations firm with major U.S. operations, the 15th largest firm for environmental public relations, and the 9th largest healthcare public relations firm. As of 2015, Crosby is the strategic communications advisor for the Agency for Healthcare Research and Quality’s Office of Communications and Knowledge Transfer.