These letters (all that are known to survive from the period) trace his travels-from San Francisco to New York, to St. Louis, and then to Paris, Naples, Rome, Athens, Constantinople, Yalta and the Holy Land; back to New York and on to Washington; back to San Francisco and Virginia City for what would be the last time; and finally, to lecture engagements in cities in Ohio, Michigan, Pennsylvania, and New York. The 155 letters in this volume--many of them previously unpublished--have been meticulously transcribed, either from the original manuscripts or from the most reliable sources available.