Maryland Financial Institutions Section 6-715
§ 6-715.
  (a)   A credit union shall keep the books and records that the Commissioner requires to determine compliance with this title.
  (b)   Unless a longer period is expressly required by State or federal law, a credit union shall retain the books and records required under subsection (a) of this section for a period of at least 5 years.
  (c)   A credit union may retain the books and records required under subsection (a) of this section at any location, provided that the credit union:
    (1)   Notifies the Commissioner in writing of the location of the books and records; and
    (2)   Makes the books and records available at the credit union's principal place of business, as agreed by the Commissioner and the credit union, within 7 days of a written request for examination by the Commissioner.
  (d)   A credit union shall retain the books and records required under subsection (a) of this section in one of the following ways:
    (1)   Original form;
    (2)   An electronic equivalent approved by the Commissioner; or
    (3)   A microphotographic copy approved by the Commissioner.