Rebecca Clough poses with a badly damaged tree she helped save at Ground Zero in Manhattan. © Mike Browne, RLA.
The famous Wethersfield Elm in Connecticut, circa 1860. Courtesy of the Wethersfield Historical Society.
Professor Ralph Chaney of the University of California, Berkeley, in China on his 1948 expedition to see the dawn redwood. Used with permission of the University of California Museum of Paleontology [UCMP], Berkeley.
Plant explorer E. H. Wilson (left) poses with Charles Sprague Sargent in front of a Higan cherry tree (Prunus subhirtella) at the Arnold Arboretum in 1915. Photograph by Oakes Ames. Courtesy of the Arnold Arboretum Archives.
Eliza Scidmore. Courtesy of the Washingtoniana Collection, Special Collections, District of Columbia Public Library.
