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 Marcin (1820-1893)
Kirchmayer, Wincenty Marcin (1820-1893)
Solecki, Łukasz (1827-1900)
di Capua, Marcello [Bernardini] (1740?-1819)
Podkański, Franciszek (1710-1789)
Prohaska, Bruno
Drogoszewski, Aureli (1863-1943)
Przetocki, Nałęcz Wacław