||The geology of western and northern Gallatin National Forest was mapped in two parts as part of an evaluation of its mineral resource potential by the USGS. Previously, the western part was released as Map A and the northern part as Map B of USGS Geologic
||Green, Gregory N.; van Gosen, Bradley S.; Wilson, Anna B.; and Silkwood, Jeffery T.
||U.S. Geological Survey Open-File Report 99-450