Minnesota Ornithologists' Union - status and distribution of birds in Minnesota, state lists, annotated bibliography, and information of interest to birders and ornithologists.
Minnesota Conservation Federation - works for conservation and protection of wildlife and natural resources; publishes Minnesota Out-of-Doors and Walk on the Wildside.
Toads and Frogs of Minnesota - introduction to the State's toads, treefrogs, and true frogs. From the Minnesota Department of Natural Resources.
