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Orchids of WisconsinAn interactive guide to the native orchids of Wisconsin. Descriptions and pictures. Jeffrey R. Hapeman. University of Wisconsin, USA.
Native Orchids of the Pacific Northwest and the Canadian RockiesA photographic record of the beautiful, and often rare, native orchids that can be found in the area. Lynden, Washington, USA.
Native Orchid ConservationMembership info. Projects, articles, and newsletters. List (with photos) of the native orchids of Manitoba. Book and DVDs available. Winnipeg, Manitoba, Canada.