1. Preliminary account of the antiquities of the region between the Mancos and La Plata Rivers in southwestern Colorado Title: Preliminary account of the antiquities of the region between the Mancos and La Plata Rivers in southwestern Colorado Date: 1919. Author: Morris, Earl Halstead, 1889-1956. Collecting Area: Rare Books Call number: E 51 U56 1911-12 NO.2 LOCAL