Zisska & Schauer's fields of specialization cover all the core areas – manuscripts; autograph letters and documents; incunabula; early woodcut books; medieval illuminated manuscripts; theology; natural history; bibliography; art history; history; literature; antique maps and atlases; travel; and topographical and decorative prints. The company places major emphasis on scholarly attention to detail and high standards of expertise in cataloguing rare antiquarian items. Each auction is accompanied by a comprehensive, fully illustrated catalogue containing detailed descriptions of the items offered for sale. These catalogues are characterized by their in-depth knowledge and bibliographic accuracy. They are compiled and researched by a team of experts who are able to draw on the resources of the company's extensive reference library and when necessary, the expertise of independent specialists.