Research in ecology and natural resources conducted by University of Wisconsin faculty and staff and unique or valuable resources in these fields held by the University of Wisconsin Libraries. Sub-collections include unpublished works from the UW-Madison Arboretum, Crandon Mine and Kennecott Flambeau Mine reports, the Geology of Wisconsin Survey of 1873-1883, USGS topographic maps, technical bulletins from the Wisconsin DNR, slides and recordings of lectures by plant ecologist Virginia M. Kline and Wisconsin Bordner Survey maps.