As each prisoner sentenced is received at a classification center within the department of correction, it will further be the duty of the probation and parole officer of the district from which the prisoner was sent to cause to be obtained and forwarded to the board a summary from the trial judge and the district attorney general containing:
(1) The facts as they developed at the trial;
(2) The nature of the prisoner's conviction;
(3) The court in which the prisoner was sentenced;
(4) The name of the trial judge; and
(5) Copies of other probation reports as may have been made in order for the board to have the benefit of the reports when the prisoner becomes eligible for parole consideration or applies for executive clemency.