Hereditaments and personal archives of distinguished Czech architects completed from other sources form the basis of the Archive of architecture of the National Technical Museum that contains more than 130 author files. The styles begin with historism, the time period spans from the mid-19th century till now, and the locality covers the territory of Bohemia and Moravia with a predominating part of materials from Prague. The materials include sketches, drawings and plans, photographs and negatives, architectonic models, personal and firms' documents, professional literature including journals and firms' leaflets. A representative part covers the period of historical styles (Josef Zitek, Josef Schulz, Antonin Wiehl, Antonin Viktor Barvitius), Art Nouveau (Jan Kotera, Josef Fanta, Alois Dryak, Jan Koula, Bohumil Hubschmann), Czech Cubism (Pavel Janak, Josef Gocar) and particularly the period between the wars starting with purism (Vit Obrtel, Evzen Linhart, Bedrich Feuerstein) and climactic functionalism (Jan Gillar, Oldrich Tyl, Kamil Roskot, Josef Stepanek, Pavel Janak, Josef Gocar, Otakar Novotny, and others). Modern and present periods are represented by hereditament of Otto Rothmayer, the most famous pupil of Plecnik, or the Liberec studio SIAL. The catalogue of processed files is based on the author index of architects.