From Page 17 The Life of Mark Twain - The Middle Years 1871-1891:
In order to support Livy in the style to which he had become accustomed and to earn his own bread and butter until he began to collect royalties on Roughing It, Sam had decided even before leaving Buffalo to speak throughout New England during the fall and winter lecture season under the auspices of the Boston Lyceum Bureau and its manager James Redpath.