A Liber beneficiorum ("Book of Benefice")is a register (table of, inventory) concerning beneficials, benefactors, properties and privileges. Excerpt from such a book was accepted by civil courts as a righteous evidence during property disputes.
The oldest known Polish register of this kind is the liber beneficiorum dioecesis Cracoviensis (book of benefice of the diocese of Krakow) by Jan Długosz from 1470–1480. Similar register has been made by Jan Łaski