“The CERL Thesaurus File is a unique facility developed to address the particularly European issue that place name and personal names in Europe varied from country to country in the period of hand press printing (1450 - c. 1830). As such, it is an essential research tool for scholars and researchers of the period. … The CERL Thesaurus contains names of persons, corporate bodies, places and printers/publishers recorded in books or other material printed during the hand-press era (1450 - ca. 1830).” Includes a virtual keyboard for entering nonstandard characters, and an annotation function.