The article deals with the union catalogue of incunabula, which began to be created during the Protectorate of Bohemia and Moravia. In the 1950s and 1960s, the long-term head of the manuscript department of the present-day National Library Emma Urbánková was trying to complete it, but it was eventually not published in print. It has recently been made available in digital form., Kamil Boldan., and Obsahuje bibliografické odkazy