My earlier message to the list was rejected because it was misidentified 
as a duplicate message that I'd already sent!  So, I'll try again:

Anyway, cf. p. 164 of A Tramp in Berlin (2013) where Twain's essay is 
cited as a manuscript included in the microfilm edition of Twain's 
previously unpublished manuscripts published by MTP.  There are quotes 
from the essay at pp. 97-100 in the book.

Kevin
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