[2] The first two fragments were discovered in the Rila Monastery in 1845 by the Russian historian Viktor Grigorovich.

Today, they are located in the library of the Russian Academy of Sciences in Saint Petersburg.

The better preserved part of the manuscripts was published in 1909 under the name "Macedonian Glagolitic Leaf" by the Russian history Grigory Ilyinsky.

[5][6] Three or more leaves were found in the Rila Monastery by Czech historian Konstantin Irechek in 1880 within the binding of Vladislav Gramatik's handwritten "Panegirik" from 1473.

The so-called "Grigorovich's Leaf" (Russian Academy of Sciences, St. Petersburg, 24.4.17) is not counted among the Rila Glagolitic sheets by all scholars.