[.... ]

641. In each of said institutions, the Warden or other per-
son in charge shall record or cause to be recorded a description
of every person committed to such institution under sentence
for felony, and also the criminal history of every such person
so committed, as full and complete as may be obtainable, and
shall attach thereto as part of said record a photograph or
photographs of such person; and, whenever the said State
Board of Prison Control shall direct, a like record shall be kept
of any person committed for misdemeanor to any of said insti-
tutions.

642. For the purposes mentioned in the preceding Section,
the State's Attorney of any County or City, in which any crim-
inal has been convicted and sentenced to one of said institu-
tions, shall forward to the Warden or other person in charge
of said institution at the request of such Warden or other per-
son, and upon blanks furnished by him, a criminal history of
such criminal as fully as the same is known or can be ascer-
tained by such State's Attorney.

643. The record herein provided for shall not be made pub-
lic, except as may be necessary in the identification or trial of
persons accused of crime. The record shall be accessible, how-
ever, to any officer of any Court having criminal jurisdiction
in this State, upon the order of the Judge of said Court, or of
the State's Attorney, which said order shall be attested by the
seal of the Court. Whenever, in the trial of any criminal case,
the fact of previous conviction of any person for" any crime
may be admissible, any such record shall be admissible in evi-
dence for the purpose of proving the fact of such conviction
and the crime for which such person was convicted.

644. A copy of such record shall be furnished, upon request,
to any warden or other officer in charge of a prison for felons
in any other State of the United States; provided that such
State has made reciprocal provisions by law for furnishing
records of its convicted criminals to the authorities of other
States.