Spanning from the first US contacts with Cambodia in the 19th century up until the late 1960s and the outbreak of war with Vietnam, this book is the first to systematically explore American relations with Cambodia. A discussion of adventurers, tourists and missionaries initially sets the scene for the analysis of official relations which began in 1950. The book traces how relations with Cambodia's king, Norodom Sihanouk, were often troubled as Sihanouk strove to keep his country out of the Cold War even when pressured by the US to join the battle against communism.