1. Correlation of geologic formations between east-central Colorado, central Wyoming and southern Montana Author/Creator: Lee, Willis T. 1864-1926, (Willis Thomas), author Publication/Creation: Washington : Department of the Interior, U.S. Geological Survey, 1927 Format: Book Access & Availability: Loading
2. Interior Department activities concerning proposed natural gas tight formations In Montana Author/Creator: United States. General Accounting Office, author, issuing body Publication/Creation: Washington, D.C. : United States General Accounting Office, 1984 Format: Book Access & Availability: Loading
3. Map showing altitude of the top of the Swift Formation, Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Format: Map Access & Availability: Loading
4. Map showing cumulative thickness of sandstone in the Swift Formation, Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Format: Map Access & Availability: Loading
5. Map showing total thickness of the Swift Formation, Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Format: Map Access & Availability: Loading
6. Relations of late Paleozoic and early Mesozoic formations of southwestern Montana and adjacent parts of Wyoming Author/Creator: Condit, D. Dale 1886-1955, (Daniel Dale), author Publication/Creation: [Washington] : [Department of the Interior, United States Geological Survey], [1919] Format: Book Access & Availability: Loading