Since its formation, Getty Images has pursued an aggressive programme of acquisition, buying up many privately owned agencies that had built up the stock photography industry, from small family-run firms to larger agencies. By 1999 it had acquired one of the largest agencies, Tony Stone Images; the online art seller Art. com; the sports photography agency Allsport; the market leader in the Benelux and Scandinavia: Word View (1996, from Mr. Bert Blokhuis, four offices, for undisclosed sum); journalistic specialists Liaison Agency; Newsmakers the first digital news photo agency; Online USA, a specialist in celebrity shots; and the Hulton Press Library, the former archive of the British photojournalistic magazine Picture Post. The Hulton collection was sold by the BBC to Brian Deutsch in 1988, when it was renamed Hulton Deutsch. In 1996, the Hulton collection was sold on once more, this time purchased by Getty Images and renamed Hulton Getty. With the acquisition of the Hulton library, Getty Images took ownership of the rights to some 15 million photographs from the British press archives dating back to the Nineteenth Century. Hulton Getty also included photographs from the Keystone Collection, as well as images by notable photographers such as Bert Hardy, Bill Brandt, Weegee and Ernst Haas.