1. Revised geologic map of the Fort Garland quadrangle, Costilla County, Colorado Author/Creator: Wallace, Alan R. Publication/Creation: Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2008 Resource Type: Map Edition: Version 1.0, May 2008. Access & Availability: Loading
2. Freshwater diatomite deposits in the western United States Author/Creator: Wallace, Alan R. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2006 Resource Type: Book Access & Availability: Loading
3. Regional geologic setting of Late Cenozoic lacustrine diatomite deposits, Great Basin and surrounding region : overview and plans for investigation Author/Creator: Wallace, Alan R. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Edition: Version 1.0. Access & Availability: Loading
4. Isotopic geochronology of the Leadville 1⁰ x 2⁰ quadrangle, west-central Colorado : summary and discussion Author/Creator: Wallace, Alan R. Publication/Creation: Denver, CO : For sale by U.S. Geological Survey, Information Services Resource Type: Book Access & Availability: Loading