Maryland Statutes
Part II - Required Denials for Specific Records
Section 4-308 - Library Records

(a)    Subject to subsection (b) of this section, a custodian shall prohibit inspection, use, or disclosure of a circulation record of a public library or any other item, collection, or grouping of information about an individual that:
        (1)    is maintained by a library;
        (2)    contains an individual’s name or the identifying number, symbol, or other identifying particular assigned to the individual; and
        (3)    identifies the use a patron makes of that library’s materials, services, or facilities.
    (b)    A custodian shall allow inspection, use, or disclosure of a circulation record of a public library only:
        (1)    in connection with the library’s ordinary business; and
        (2)    for the purposes for which the record was created.