Poe was run down by a runaway brougham on a Paris street during the 2nd year of the Confederate War. Charles Baudelaire identified his body at the Rue Morgue, and included among Poe's personal effects was the C1 cipher.
Baudelaire retained the cipher, making a copy that he gave Judah P Benjamin, who after escaping from the Union from Florida made his way to the Bahamas, and England, and for a short stay in Paris.
Benjamin, who gave his copy of Vattel's "Law of Nations" to CSA Major Edward Sixtus Hutter at Danville after the fall of Richmond, later mailed the cipher from London under an assumed name of Thomas J Beale to Hutter.
Hutter passed on the cipher to his brother, Ferdnand, who along with his cousin James Beverly Ward, Ward's wife and cousin John William Sherman, created the Beale Papers to distract those Northern Aggressors from looking for the VMI hidden Richmond stores and the lost Confederate treasury.
The Hart brothers, KGC descendant "guardians", added further to this subterfuge with their "Papers", and George Hart misleading Pauline Innis and her husband who were conducting a secret government search for the lost Confederate assets.
...and as the raven told the three crows, that is the way it happened, give or take a lie or two.