Photo Attributions
Paul Hermann Wilhelm Taubert, 1862-1897, Glycyrrhiza glabra [Public domain], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3AGlycyrrhiza_glabra_Taub121b.png.
Nathaniel Lord Britton, 1859-1934, and A. Brown, Althaea officinalis [Public domain], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3AAlthaea_officinalis-linedrawing.png.
Unknown artist, The American Cyclopædia, v. 6, 1879, p. 551, AmCyc Elm - Slippery Elm [Public domain], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3AAmCyc_Elm_-_Slippery_Elm.jpg.
James B. McNair, Spices and condiments, 1930, Spices-condiments-ginger [Public domain], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3ASpices-condiments-ginger.svg.
AndyRobertsPhotos, Apple Cider Vinegar, flickr, http://www.flickr.com/photos/aroberts/4080080785/in/set-72157603980780218, CC: BY 2.0, http://creativecommons.org/licenses/by/2.0/. Obtained February 25, 2014.