On 22 June 2022, the ‘13 Centuries of Bulgaria’ National Endowment Fund donated 51 books to Paisii Hilendarski Plovdiv University.
The donation includes scientific papers and publications published by the Bulgarian Historical Heritage Foundation, Colibri Publishers, St Kliment Ohridski University Press, Janet-45, Sluntse Publishers, Balkan Press, and Vion , and is destined for the Sofia University library.