The book is named after the apocryphal message of King Abgar to Jesus that was included. A total of six copies of the book are preserved, only one of which in Bulgaria, housed in the SS. Cyril and Methodius National Library in Sofia. The first phototype issue of the book was published in 1905 by the Russian Kuzinsky. The first Bulgarian one followed in 1926 by Vasil Pundev and the one by Bozhidar Raykov was printed in 1979. It was not until 2001 that an edition translated to standard modern Bulgarian (by Kiril Kabakchiev) was published.