http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f7-subject=Geology -- Iowa) http://norton.wrhs.org/collections/search?docsPerPage%3D100;f7-subject%3DGeology%20--%20Iowa Results for your query: docsPerPage=100;f7-subject=Geology -- Iowa Thu, 01 Jan 1970 12:00:00 GMT Letter of the Secretary of the Treasury, communicating a report of a geological reconnoissance of the Chippewa Land District of Wisconsin, and the northern part of Iowa. Owen, David Dale, 1807-1860, United States General Land Office. http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Report of a geological exploration of part of Iowa, Wisconsin, and Illinois: made under instructions from the Secretary of the Treasury of the United States, in the autumn of the year 1839; with charts and illustrations. Owen, David Dale, 1807-1860 http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT