The transcriptions anchor the images to particular lines of text. Thus, a researcher will be able to assemble records for all the images used in conjunction with a particular work appearing in several different manuscripts. The bibliography field uses the names of the authors and titles drawn when possible from OCLC authority lists. When works are anonymous or little known, the names follow the local identification of the text, or the standard census of manuscripts . In medieval times leprosy could refer to a number of skin problems, and perhaps only rarely to the disease as defined in the modern world.
Medicinal plants present a spectrum of such difficulties.
Medieval names may incorporate many modern species. Generally, however, even when species and genus are in dispute, the plant family can be ascertained with reasonable certainty, allowing the use of plant family names as subject terms. Many medieval plant names may searched in the title field. The MARC format may seem bewildering at first, but it offers information rapidly to the trained eye. This command limits searches in the session to the Visual Materials records.