Calumet Park is named after the Calumet River and the Calumet Region of southeast Chicago and northwestern Indiana drained by the river. Planning for Calumet Park began in 1904 with the initial acquisition of of land. The Olmsted Brothers, a noted firm of urban landscape architects, drew up initial plans for landscaping the proposed new park; however, as a result of the swelling population of the East Side and a consensus that the original plans were inadequate, further land acquisitions were made, the Olmstead plans were revised, and facilities were built.