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.
Solecki, Łukasz (1827-1900)
Jabłońska, Helena (1864-1936)
Reymont, Władysław Stanisław (1867-1925)
Bokum, Jan Kazimierz de Alten (1666-1721)
Załuski, Józef Andrzej (1702-1774)
Krechowiecki, Adam (1850-1919)
Konopnicka, Maria (1842-1910)
Konopnicka, Maria (1842-1910)
Sieroszewski, Wacław (1858-1945)
Jan III Sobieski (król Polski ; 1629-1696)
Potocki Alfred (1822-1889)
Konopnicka, Maria (1842-1910)
Łubieński, Kazimierz (1652-1719)
August III (król Polski ; 1696-1763)