Dutch Elm disease:  http://www.na.fs.fed.us/spfo/pubs/howtos/ht_ded/ht_ded.htm

Oak Wilt:  http://www.na.fs.fed.us/spfo/pubs/howtos/ht_oakwilt/toc.htm

Emerald Ash Borer:  http://emeraldashborer.wi.gov/

Gypsy Moth:  http://www.uwex.edu/ces/gypsymoth/
Gypsy Moth, "Wisconsin Moth Intenet Portal": http://www.gypsymoth.wi.gov/

Native Plant resources:  http://dnr.wi.gov/org/water/wm/dsfm/shore/documents/nativeplants.pdf