As a researcher you work with different kinds of sources (archival documents, literature, images, technical reports, etc.) that present artistic, literary, scientific content in a specific way. Geovistory Toolbox support five kind of source objects:A Unique Source Object is a source with a uniquely existing content (frequently made by hand).A Serially Produced Source is a source that was produced with the intention of having a multitude of copies. A Publication Exemplar is a specific copie of a Serially Produced Source. Serial Work comprises objects that are, or have been planned, to be produced in sequences of objects. Often they have common features. A Web Source is the content you receive when sending a web request into the web.