TIB SAH digital is the online collection portal of the Collection Albrecht Haupt. This collections is part of the special holdings of Technische Informationsbibliothek - Leibniz-Informationszentrum Technik und Naturwissenschaften Universitätsbibliothek in Hannover, Germany, and contains more than 6,000 hand drawings by Albrecht Haupt's (1852-1932) own hand, 1,800 books with a focus on architecture and garden architecture as well as a collection of single sheets with hand drawings and prints from the 16th to the 19th centuries by European artists. Step by step the holdings are digitized, catalogued and published in TIB SAH digital under free licenses.