. The “9” and the “5” in the two dates given in this sentence are written over other
illegible numbers, but Jenings presumably means
's letter of 19 April
to Benjamin Franklin (above), for no letter of the 15th has been found.
's only known letter of the 19th to Jenings, a cover for an enclosed account of
's journey through Spain (above), makes no mention of enclosing
's letter to Franklin.