This study is dedicated to documenting the relationship between these two important musicians on the basis of excerpts from extant written sources. The most important documentation of contacts between Vaclav Jan Tomasek (1774-1850) and Carl Maria von Weber (1786-1826), who worked in Prague from 1813 until 1817 as Kapellmeister of the Estates Theatre, is Tomaseks autobiography published in Prague in 1845-1850 in a yearbook titled Libussa. We find additional brief documentation in Weber's diaries and in the correspondence of both men addressed to other persons. Tomasek's autobiography is also important documentation of how Weber's works were viewed by the German public and music critics., Obsahuje seznam literatury, and Anglické resumé na s. 82.