Bird, H. L. (H. Leon)2017-07-182022-02-032017-07-182022-02-031900-1999https://hdl.handle.net/11124/171104Scale 1:600. 1"=50'.Relief shown by contours, hachures, and spot heights.North oriented to upper left hand corner.Pen and ink on tracing linen.Color.Covers parts of Boulder County, Colorado.39 x 32 cmmanuscript mapsmine mapsengMines and mineral resources -- Colorado -- Boulder County -- MapsStillImage