The C. D. Baker Engineering Field Notebooks are comprised of the notebooks and informational texts Charles Duncan "C. D." Baker created and used between 1909 and 1966 while he served as the County Surveyor for Clark County, Nevada and the City Engineer for Las Vegas, Nevada. The field notebooks contain survey coordinates and elevation data for much of early Las Vegas and provide important information on early property boundaries, historical elevations, and lengths of streets from the 1920s to the 1960s. There are also oversized right of way maps for Clark County, Nevada.