Probably the most valuable part of the Moll Collection, though probably not very attractive for public, are the original map inventory catalogues. They are not mere records of the maps and graphics contained in the collection, but in many cases, there are more detailed records about each item and even about the maps that are not included in the collection, but that Bernhard Paul Moll was aware of. Usually there is a more detailed explanation on what is shown in a particular work and what were the circumstances of its creation. Especially in cases of numerous hand-drawn depictions catalogues contain information or a straight transcript of messages from local informants, whose reports were crucial for the final image. For example, the works regarding Moravia were based upon official reports from a state official and a famous historian Josef Dismas Hoffer. In the case of the Hungarian lands the Moll map inventory catalogues represent the first treatise ever on the cartographic depiction of the territory. Some catalogues have been preserved in several versions, or in abstracts, traditionally there were also registered volumes in the collection that have a connection with it but were created later than the collection itself. Other variants of the catalogue exist in Budapest, Graz, and Innsbruck. Geyer΄s drawings were discovered in the Berlin State Library.