§ 23. Records, documents and papers of the department. All
proceedings, documents, papers and records filed or deposited with the
department relating to matters within its jurisdiction and powers shall
be public records; except such portions thereof as are received and
accepted by the commissioner, as being of a confidential nature which
when so received and accepted shall not be subject to subpoena. Copies
of all official documents and orders so filed or deposited, certified by
the commissioner, a deputy commissioner, counsel, a division director,
or an assistant director under the seal of the department to be true
copies of the originals, shall be evidence in like manner as the
originals.