1. Precambrian basement geologic map of Montana, an interpretation of aeromagnetic anomalies Author/Creator: Sims, P. K. 1918-2011. (Paul Kibler) Publication/Creation: Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2004 Format: Map Edition: Version 1.0. Access & Availability: Loading
2. Preliminary geologic map of the Townsend 30' x 60' quadrangle, Montana Author/Creator: Reynolds, Mitchell W. Publication/Creation: Denver, Colo. : U.S. Geological Survey, 2006 Format: Map Edition: Version 1.0. Access & Availability: Loading
3. Preliminary geologic map of the White Sulphur Springs 30ʹ x 60ʹ quadrangle, Montana Author/Creator: Reynolds, Mitchell W. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, 2006 Format: Map Edition: Version 1.0. Access & Availability: Loading