Appleton-Century-Crofts, Inc. was a division of the Meredith Publishing Company. It is a result of the merger of Appleton-Century Company with F.S. Crofts Co. in 1948. Prior to that, The Century Company had merged with D. Appleton & Company in 1933.
The Century Company, and its subsequent incarnations published the New Century Dictionary.
Eventually, part of the company became integrated into Academic Learning Company, LLC; the remainder became part of Prentice-Hall.