I've come across a note in the Day By Day entry for August 1, 1908.  
This from an obituary notice in the New York Times, that "...and when 
Mr. Clemens
started on his trip around the world in 1894, [sic 1895] Mr. 
Moffett accompanied him across the Continent as far as San 
Francisco."    This trip did not include San Francisco and Sam Moffett 
is not mentioned by Major Pond in his journal - as per the Karanovich 
version in the "Overland with Mark Twain" volume from 1992.  Is the New 
York Times wholly in error?

/Unaffiliated Geographer and Twain aficionado/