Mineral Resources of Colorado Author John W. Vanderwilt, Denver CO: State of Colorado Mineral resources Board, 1947. Book has 547 pages with maps, plates and numerous fold-out maps and tables. No tears or markings. Former owners name on front free page. Cover boards green cloth with black lettering on front and spine. Scratches and water mark on covers. Corners slightly worn, rear cover board and spine detached. Approximatley 7.75" wide and 9.75" tall. Moderate used condition.