The year-long fact-finding mission of apostle David O. McKay and his traveling companion Hugh J. Cannon to places historian Leonard J. Arrington has called the "geographic and organizational periphery" of Mormondom was one of the most significant moments of the twentieth century for The Church of Jesus Christ of Latter-day Saints. While the contemporary LDSchurch has grown to become a global presence, the early decades of the last century found missionaries struggling to gain converts abroad. Cannon's rich and vivid account of his and McKay's 61,646-mile around-the-world journey...