 Another innovation in gameplay attributed to Magie is the concept of "ownership" of a place on a game board, such that something would happen to the second (or later) player to land on the same space, without the first player's piece still being present.A copy of Magie's game that she had left at the Georgist community of Arden, Delaware and dating from 1903–1904, was presented for the PBS series "History Detectives".This copy featured property groups, organized by letters, later a major feature of "Monopoly" as published by Parker Brothers.