U.S. Dept. of Interior: Salazar announces recovery of gray wolves in the western Great Lakes, removal from threatened and endangered species list December 21, 2011 http://www.doi.gov/news/pressreleases/Salazar-Announces-Recovery-of-Gray-Wolves-in-the-Western-Great-Lakes-Removal-from-Threatened-and-Endangered-Species-List.cfm