1. Anamosa Yale Public content 1890. 2011-12-12T21:26:32Z. 2022-03-29T20:39:22Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Iowa.
2. Durant Yale Public content 1890. 2011-12-12T21:26:34Z. 2022-03-29T20:39:22Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Iowa.
3. Tipton Yale Public content 1890. 2011-12-12T21:26:40Z. 2022-03-29T20:39:23Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Iowa.