Sunlight filters through a lush canopy of eucalyptus and orange trees lining a glassy irrigation canal in Riverside, California — a scene that perfectly embodies the citrus-boom optimism of early 20th-century Southern California. Riverside was the wealthiest city per capita in the United States around 1895, its fortune built almost entirely on the Washington Navel orange and the elaborate canal systems that made desert agriculture possible. Sent in April 1907 by a traveler signing as a mother, the message written across the image reads in part: "am here at home and am too one… I will write them… nice as bee yesterday + we had a boy called… will come to morrow…" — a tender, slightly hurried domestic note mailed across the continent to a young woman named Reba in Malden, Massachusetts. The card bears a vivid Riverside, CAL. flag machine cancel and a well-centered green 1¢ Benjamin Franklin stamp.