The letter relating to the death of Logan's family
was written nine years after the time when he was en-
gaged on the Memoir.' This letter has been accepted
as among the most trustworthy evidence on that
episode. Referring to Clark at that time, Samuel
Brown, through whom the letter was secured, wrote
Jefferson: "To those who have the happiness of being
acquainted with that truly great man, his statement
will bring the fullest conviction. His memory is
singularly accurate, his veracity unquestionable. To
such a respectable authority I can suppose no one
capable of objecting, except Mr. Luther Martin."
  John Pope describes an interview with Clark during
1791 as follows: "Arrived at his house under an appre-
hension that he had forgotten me. He immediately
recognised me and, without ceremony, entered into a
familiar though desultory conversation, in which I was
highly pleased with the Atticism of his wit, the genuine
offspring of native genius. On serious and important
occasions, he displays a profundity of judgment aided
by reflection and matured by experience. -
  In the further attempt to reach some conclusion on
the trustworthiness of the Memoir, comparison has
been made wherever possible with other documents
of the period. The results are, in general, indicated
in the notes accompanying the Memoir. There is
abundant proof that Clark, when entering upon the
task, strove to collect all his correspondence which
bore on the various phases discussed. That he made
use of it is evident from his own annotation, such as:
l For the account of this letter, see ante, 3 et seq.
2John Pope, Tour in the Western and Southern Territories in 1790 (Rich-
mond, 1792), 19.