The GLOBALISE project aims to unlock the extensive archives of the Dutch East India Company (VOC) using Handwritten Text Recognition and Natural Language Processing techniques. By creating a hierarchical reference thesaurus, the project makes the VOC archives researchable and enhances search capabilities. The reference data provides unique identifiers for terms, catalogues their variations and tries to link them to existing definitions where possible. Providing such a contextually appropriate and expandable vocabulary allows researchers to explore the archive with the help of synonyms and related concepts.