Since a number of people seem interested in native orchids, I thought I'd mention my wife bought me a copy of Wild Orchids of the Northeastern United States, by Paul Martin Brown and published by Cornell. It's being sold by Edward R. Hamilton Bookseller and the total cost, including shipping, was just under $10. It arrived today and is a nice 236 page field guide, with line drawings and range maps for each species and 128 color photos too.