Preliminary Geologic Map of the North Half of the Spirit Mtn. NW Quadrangle, Clark County, Nevada and Mohave County, Arizona, by P. Kyle House and James E. Faulds, superseded by OF09-6
Available on the Web - Plate - Map unit descriptions
Open-File Report 08-5, 30.5x30.5" color plate, 4 pages of text, $17.00