http://www.shapero.com/php/ Bernard Shapero
http://russellrarebooks.com/ Charles Russell
http://www.peterharringtonbooks.com/ Peter Harrington
http://books.simsreed.com/ Sims Reed
http://www.donaldheald.com/ Donald Heald
http://www.aradergalleries.com/ Arader Galleries
http://www.vasaribooks.com/ Vasari Rare Books
http://www.antiquariaatjunk.com/ Antiquariaat Junk
http://www.schierenberg.nl/ Dieter Schierenberg
http://www.meemelink.com/ Jan Meemelink
http://www.kew.org/ Royal Botanic Gardens, Kew (UK)
http://www.nybg.org/ New York Botanical Garden (US)
http://huntbot.andrew.cmu.edu/ Hunt Institute for Botanical Documentation (US)
http://www.scienceandsociety.co.uk/ Science Museum (UK)
http://www.bl.uk/ British Library (UK)
http://www.nypl.org/digital/ New York Public Library (US)
http://www.loc.gov/ Library of Congress (US)
http://www.rarebookroom.org/ Rare Book Room (library of digitized books)
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