General

Aldo Leopold Nature Center
Cable Natural History Museum
Civilian Conservation Corps - Wisconsin Camps (CCCA)
Cultural Landscape Legacies
Geographic Names Information System - Wisconsin (Yale Univ.)
Great Lakes: An Environmental Atlas and Resource Book (EPA)
Museum of Natural History (UW-Stevens Point)
Nature Net
Northern Great Lakes Regional Visitor Center
Wisconsin Dept. of Natural Resources - State Parks History
Wisconsin Water History (Fox/Wolf Environmental History Project)
Woodland Dunes Nature Center

Geology & Prehistoric Landscape

Devil's Lake State Park Visitor's Guide
Ice Age Park and Trail Foundation
Ice Age National Scenic Trail (Natl. Park Service)
University of Wisconsin Geology Museum
Wisconsin Geological and Natural History Survey
WoollyMammoth.org (Kenosha County Mammoths)

Natural Disasters

Earthquake History of Wisconsin (USGS)
Great Peshtigo Fire of 1871
New Richmond Cyclone, 1899
Peshtigo Fire (NOAA)
Peshtigo Fire Museum
Top Ten US Killer Tornadoes
Tornadoes of Wisconsin

Vegetation and Climate

American Environmental Photographs - Wisconsin (Library of Congress)
Lower Wisconsin State Riverway History
University of Wisconsin Arboretum
Virtual Foliage Home Page (UW-Madison Dept. of Botany)
Wisconsin Natural Heritage Inventory Program (Wis. DNR)
Wisconsin State Herbaruim
Woodland Dunes Nature Center (Two Rivers)

See also:

Notable Persons: Aldo Leopold
Notable Persons: Gaylord Nelson
Notable Persons: John Muir

Last updated 2-06.  Suggest sites or report dead links.