The purpose of this essay is to systematize the information acquired to date on the
determination and exact number of the letters written by Christian-Democrat leader
Aldo Moro while a prisoner of the Red Brigades, and delivered by that terrorist group
over the 55 days of his abduction (16 March-9 May 1978). The edition of Aldo Moro's
Letters from the prison, edited by Miguel Gotor (Einaudi, 2008) is a constant source of
reference for the first part of this essay, which debates Gotor's reckoning of the letters
and messages actually received during Moro's detention. The uncertainty about this
question stems from the fact that the appointed judicial authorities were not informed
of all the letters issuing from the Red Brigades' prison. The second part deals with
some new information concerning the timing of the delivery of some letters, and the
upsetting discovery that a few writings by the politician, that have yet to be tracked
down, must have arrived before March 29th 1978, the first known delivery date.