Access to both recent and archival versions of documents.
“Wisconsin’s largest repository of geologic maps, papers, reports, and data… over 2,000 downloadable documents–many of which are also available in print.”

"Geology and Natural Resources of Wisconsin consists of nine foundation volumes that provide detailed documentation of mid- to late-19th century Wisconsin geological and natural history. Contents include government reports and land surveys of Wisconsin and surrounding states, supplemented with numerous maps and illustrations. Authors include renowned 19th-century state geologists and UW faculty and administration David Dale Owen (1807-1860), James Hall (1811-1898), Josiah Dwight Whitney (1819-1896), Edward Daniels, and Thomas C. Chamberlain (1843-1928)."