947.26  Cooperation of custodian of prisoner; right of access.--The superintendent, warden, or jailer of any jail or prison in which persons convicted of crime may be confined and all officers or employees thereof shall at all times cooperate with the commission and, upon its request, shall furnish it with such information as they may have respecting any person inquired about as will enable the commission properly to perform its duties. Such officials shall, at all reasonable times, when the public safety permits, give the members of the commission and its authorized agents and employees access to all prisoners in their charge.