Md. Code, Business Regulation § 1–304

(a) This section does not apply to:

(1) a minute book of a corporation; or

(2) a record of a sale or other transaction that involves a weapon or poison that can be used in committing a crime.

(b) Unless a specific period is set by law for the preservation of a business record that is required by the laws of this State to be kept, the business record may be destroyed 3 years after it is made.