Q. How do you know? Did you see the personal files of these prisoners or did you see the opinions and sentences on the basis of which the prisoner had been incarcerated?
A. Only on the basis of the type of prisoner that would be incarcerated in a certain penitentiary.
Q. How do you, as a doctor, know exactly what sort of prisoner is incarcerated in this penitentiary and what sort of prisoner is incarcerated in another prison? How do you know that?
A. That’s a matter of common knowledge to one who reads the newspapers, the press, and who is generally informed on such matters. In a Federal penitentiary then you might have prisoners who have been incarcerated because of court martial.
Q. Are inmates of Federal penitentiaries used for experiments too, as far as you know?
A. Yes. They may be.
Q. In other words, political prisoners too, that is, prisoners who were condemned by a court martial or by another court?
A. We have no political prisoners in the United States.
Q. Are not prisoners condemned for high treason or treason and the like? Those are political crimes.
A. Not to my knowledge.