The article is dedicated to an unknown letters of Kazimierz Wyka and Stanisław Pigoń to the priest Jan Wiśniewski, which were found in the Diocesan Library in Sandomierz. Both resarchers wishd to gain access to the works of Adam Mickiewicz and Cyprian Kamil Norwid. The main contents of these letters are requests for a possibility of reading authographs of these works. Jan Wiśniewski was a known and worthy collector of Polish memorabilia. Stanisław Pigoń was reasercher and publisher of the works of Adam Mickiewicz. Kazimierz Wyka, as a historian of Polish literature, studied works of Cyprian Kamil Norwid.