BUSINESS AND PROFESSIONS CODE
SECTION 500-501

500.  Whenever the register or book of registration of the Medical
Board of California, the Board of Dental Examiners, or the Board of
Pharmacy is destroyed by fire or other public calamity, the board,
whose duty it is to keep the register or book, may reproduce it so
that there may be shown as nearly as possible the record existing in
the original at the time of destruction.

501.  For the reproduction of the destroyed register or book the
board shall make use of such existing official printed registers,
books or matter, certificates, affidavits to be presented, or other
official information as may be available and which may appear to the
board to be authentic.  Upon the completion of the reproduction, the
board shall by resolution adopt the reproduced register or book as
the register or book of the board, and thereafter the same shall be
taken and used to all intents and purposes as well for evidence as
otherwise as if it were the original.