In a form of digital copies, there are valuable and interesting collections of manuscripts recorded. There are letters of writers and scholars to Józef Wiśniowski, document of the archbishop Jan Rzeszowski - 1433, proving the fittings of the church in Buszcza village; privilege of organizing market fairs in Łańcut from 1726, issued by king August II; the Sejm speeches from the eighteenth century.
Lubomirski, Franciszek Grzegorz (1752-1812) Kotula, Franciszek (1900-1983) (red.)
Kirchmayer, Wincenty (1820-1893)
Kirchmayer, Wincenty (1820-1893)
Solecki, Łukasz (1827-1900)
Lubomirski, Franciszek Grzegorz (1752-1812) Kotula, Franciszek (1900-1983) (red.)
Jabłońska, Helena (1864-1936)
di Capua, Marcello [Bernardini] (1740?-1819)
Siemaszkowa, Wanda (1867-1947)
di Capua, Marcello [Bernardini] (1740?-1819)
Konopnicka, Maria (1842-1910)
di Capua, Marcello [Bernardini] (1740?-1819)
Mikucka, Helena
di Capua, Marcello [Bernardini] (1740?-1819)
Prus, Bolesław (1847-1912)
Brückner, Aleksander (1856-1939)
Brückner, Aleksander (1856-1939)