The Louisiana in the Civil War Message Board

Prison in Alexandria

In a post-war report of the New York state assembly, a list of war time prisons in Louisiana was given. In it was stated, "The 'Yankees' were ill treated at Alexandria, by officers in command; one Lieut. Dean of the 'Crescent Regiment,' being conspicuous for insolence." Looking in the CMSRs, I haven't been able to determine who this "Lt Dean" could have been. Anyone know of accounts of the prison in Alexandria or any other ideas where to look?