Chapter One: South African citizenship before apartheid; Chapter Two: Pre-Union schemes to control mobility; Chapter Three: Borders before Union; Chapter Four: Union, the Act, and the Registrar of Asiatics, 1907-1914; Chapter Five: A nationalised bureaucracy, 1908-1927; Chapter Six: African mobility and bureaucracy ; Chapter Seven: The Commissioner's population, 1927-1937; Chapter Eight: Officially one South Africa; Chapter Nine: Putting nationality into statutes, 1927-1937; Chapter Ten: Ways forward.