Unlike most nature photographers, Ketchum can measure the effectiveness of his work in acres saved. Indeed, it has been used to support successful conservation campaigns ranging from the preservation of New York’s Hudson River Highlands to the protection of Alaska’s Tongass Rainforest from logging—in the latter case, compelling Congress to set aside over a million acres of old-growth trees. For Every Tree Tells a Story, though, Ketchum focused his attention on a single specimen. A 50-foot-tall Moreton Bay fig (Ficus macrophylla), the Aoyama Tree was planted in 1920 by its namesake, a Buddhist priest in the Little Tokyo neighborhood of Los Angeles, at the gates of the first Koyasan Buddhist Temple, one of the earliest in the city. It is a symbol of the long and sometimes difficult history of L.A.’s Japanese-American community. Over the years, though, it has been increasingly boxed in by the parking lot required for surrounding buildings, including, ironically, the Japanese American National Museum.