General works about archives are classed in the LCC schedule at CD 931-4280. General works about medical archives are classed in WZ 24. Works about archives from a specific institute are classed with the institute.
A work about the archives at Johns Hopkins Hospital located in Baltimore, Maryland is classed at WX 28 AM3.
A bibliography or the holdings of a specific archive that is part of a library is classed with the library.
A work about the Welsh Medical Library archives is classed at Z 675.M4.
A bibliography or the holdings of a specific archive that is not part of a library is classed with the institute with a "Z" in front of the class number.
A catalog of the archives at Johns Hopkins Hospital is classed at ZWX 28 AM3.