Microsoft acquired the right to use Collier's Encyclopedia content from Atlas Editions, which had by then absorbed Collier Newfield. Microsoft incorporated Collier's Encyclopedia's content into its Encarta digital multimedia encyclopedia, which it marketed until 2009.

Collier's Encyclopedia was an entirely new, 20 volume work, with the first volumes available in 1949 and all volumes published by 1951. It had more than 2,000 contributors, included 10,000 black